yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Q&A, Help & Troubleshooting] karistep:
Same boat here

Nexus 7 root and cm10

Recognised in recovery mode and adb driver

Not recognised any more in normal use

Some time show unkow device and sometime nothing

Windows 7 sp1 32bits

Charging is ok

Stock cable

Usb debug mode does not change anything

Any news on the subject ?
[Nexus 7 Q&A, Help & Troubleshooting] sendbeer:
Sorry if my problem is different than what you guys are having but I found my solution in this thread. Seems Windows was using the ADB drivers instead of the MTP ones. I followed the directions for Windows 8 and Nexus 7 happily appeared on my computer again.
[Nexus 7 Q&A, Help & Troubleshooting] redviper52:
Got it back. Mboard, USB port n battery changed. Has been working well since then...
[Nexus 7 Q&A, Help & Troubleshooting] timebomb:
How were you able to flash the ROM to the Nexus 7?

My Nexus 7 is not showing up at all in the Device Manager on any computer. I've tried 3 computers and nothing.

USB chargers fine, but no data connection.

If the computer can't see the Nexus 7, how are you suppose to flash a ROM to it?
[Nexus 7 Q&A, Help & Troubleshooting] speederTM:
I need help pls

I need a link or name of a ROM img file for my google nexus 7 tablet 8gb

to install it from Toolkint

my tab. is unlock and root plus cwm recovery mode but I have no zip file on my tab :( and all data an cache is delete'd...

I try to push a zip file with the Toolkit but did not work :( I have no runining andriod rom at the moment on it

or some way to connect it to the pc and copy a .zip rom on the tab.

thank you
[Nexus 7 Q&A, Help & Troubleshooting] karistep:
Someone with the same problem (no adb-over-usb, since upgrading to 4.2.2) told me last night, that he was able to solve the problem, by following the advise of user Raj on stackoverflow: http://stackoverflow.com/questions/...turn-offline-after-the-device-string#15041045

---------- Post added at 12:35 PM ---------- Previous post was at 12:32 PM ----------

Install this kit on your computer and install factory 4.2.2 from this kit

http://www.wugfresh.com/nrt/

---------- Post added at 01:34 PM ---------- Previous post was at 12:35 PM ----------

Envoyé depuis mon Nexus 7 avec Tapatalk
[Nexus 7 Q&A, Help & Troubleshooting] speederTM:
damn is make me go crazy the dam tablet.... checking ADB Status.... is not connectig to the PC.... I had the tablet in all 3status recovery mode , bootloader mode and the status black screen with the google writing and the open pad lock on the botom.

now it stops on checking fastboot status in the NRT_v1.6.3

my samsung S3 is connecting with no problem

but the tablet.... I try NRT_v1.6.3 and the same... usb problem....

I'm missing somthing is there a package with drivers for android or somthing I have wondershar mobilego and the same it will not connect :(

---------- Post added at 10:01 PM ---------- Previous post was at 09:01 PM ----------

YEEEE FINALY problem solved with NRT_v1.6.3 + YOU NEED THE DAMN ANDROID SPECIAL USB DRIVERS in my case this one worked drivers from asus web page :D

http://support.asus.com/Download.aspx?SLanguage=en&m=Nexus+7&p=28&s=2

I read this as well

http://xdaforums.com/showthread.php?t=1830108

I try that Android SDK pak but do no why did not want to install

thank you for your quick replays and hope others will find this usefull so that they can fix it quickly not lose 2-3h looking what and how to do.
[Nexus 7 Q&A, Help & Troubleshooting] timebomb:
No root. 100% stock rom. Original 4.2.1 ROM to OTA 4.2.2 ROM. BIG MISTAKE!!

Didn't get a chance to root yet. Didn't need to root for what I was using the Nexus 7 for.

Cannot access anything in Recovery Mode. Only says No Command.

Still cannot see Nexus 7 in Device Manager. USB Chargers fine. But no Data Connection.

Any other options?
[Nexus 7 Q&A, Help & Troubleshooting] Shiftone:
Having exactly the same issue as the poster above....

no usb connection - charging fine

I don't get any feedback from either Win 7 XP or Ubuntu when plugging in the tablet - nada zip nothing

I've only just acquired the tablet off ebay so no idea how long the problem has existed or when it started... trying to return to the seller but interested in finding a fix if one exists...
[Nexus 7 Q&A, Help & Troubleshooting] actionxu:
Same problem here after charged in car

My nexus 7 has the same problem as most ppl described here. It happened after I charged it on my car. Why why why???!!!

Now it can be charged without problem. But no computer could recognize it at all. Even though it shows up in device manager as "unknown device", it says the device could not be started.

I strongly believe it is problem of nexus 7 itself, software or hardware. So disappointed!
[Nexus 7 Q&A, Help & Troubleshooting] Shiftone:
There are very definitely 2 problems people are experiencing here;

1. No USB connection and no recognition by the PC at all (ie. no device in device manager / usb activity in dmesg on linux)

2. No USB connection but device is seen by the PC (ie. an unknown device in device manager / dmesg usb plug event in Linux)

My guess is situation 1 is a hardware fault and will need an RMA

My next guess is situation 2 is potentially a software driver issue in some cases - but in other is also a hardware fault.

If you have situation 1 - may as well get your RMA moving along. Speak to these guys;

http://support.asus.com/Hotlines.aspx?SLanguage=en

Have your serial number and date of purchase etc ready

If you have situation 2 - try a fresh driver install - preferably on a computer that has not had any other Android devices connected to it ever. Different windows android drivers can and do conflict with each other and cause odd problems. Better yet - try Ubuntu which is much less prone to driver conflicts - if you can get it working on any other machine then you know you have a software issue with the PC not the tablet.

If after that still no joy - RMA time.

I have started my RMA this morning.
[Nexus 7 Q&A, Help & Troubleshooting] pierpang:
I solved the problem in the same way in Windows 8:

- I removed the driver "Android ADB Interface" inside Device Manager

- I unplugged the usb cable and plugged it again

- After that Windows 8 immediatly recognized the unit as Nexus7 (finally!)

Now it appears as "Nexus" 7 in "Portable Devices" inside Device Manager
[Nexus 7 Q&A, Help & Troubleshooting] moonroy:
The problem with this thread is that we have so many different issues. Some of the posts are just about fixing drivers. That is quite easy. Some issues are about the cables, some cables just won't work.

Then we have the broken ones, like mine. I have tested it in many computers using many cables, rebooted in many different ways and so on. Connected to Linux, dmesg and lsusb and nothing appears. Then once in a while, something might happen with an erroneous device and then it is gone again. I still don't know if it is software related or hardware, but my guess is the hardware. Don't really feel like replacing it because I then have to reinstall and reconfigure everything.
[Nexus 7 Q&A, Help & Troubleshooting] tjsantos:
OTG Mode

Hi all,

As far as I can tell, this problem seems to be because the device is stuck in 'otg mode'.

Now, again as far a I can tell, otg is controlled by the ID pin of the USB. When the cpu detects a certain voltage / resistance, it activates / deactivates OTG mode. So what we need first is a pinout of the Tegra chip.
[Nexus 7 Q&A, Help & Troubleshooting] timebomb:
I solved my problem my RMA-ing my Nexus back Asus.

It was the the ONLY solution.

I think I read 4.2.2 has USB Power Surge protection or extra ADB Security. Its suppose to protect from Cheap Wall USB Chargers/Car USB Chargers/USB Cables.

This might have been the cause when was charging my Nexus in the car with a Cheap Car USB Charger.

It could have also been a combination of 4.2.2 and Cheap Car USB Charger.

When I was on 4.2.1 and using the Cheap Car USB Charger I didn't have the problem until I did the OTA update to 4.2.2.

Asus sent back my original Nexus because I had a little scratch on the body which was still there when I received it. It came with 4.2.1, so I'm assuming they did a factory reset back to 4.2.1. I was not able to perform a factory reset because my Nexus was 100% Stock and I could not access the recovery mode or reflash.

I didn't take any chances with the returned Nexus. It is fully rooted with CWM Flash Recovery in case anything else happens..

Recap:

I'm currently on 4.2.1 and will NOT be upgrading to 4.2.2.

I'm fully rooted with CWM Flash Recovery in case I need to reflash.

So far, no problems.
[Nexus 7 Q&A, Help & Troubleshooting] redviper52:
Now it can charge but not recognised by any pc or macs...
[Nexus 7 Q&A, Help & Troubleshooting] kodde:
Did anyone who RMAd their Nexus 7 dare to try a car charger again? Anyone found a solution?

I had the same issue after charging with a cheapo 5V 0.5A cigarette-plug-to-USB-plug. RMAd it and go it back with a new motherboard. Now it works again. But I want to be able to charge it in my car and motorcycle on longer tours. :(

Did google acknowledge this issue at all?
[Nexus 7 Q&A, Help & Troubleshooting] Falipene:
USB fastboot stop working suddenly

Now I have a bricked Nexus 7 wich I'm gonna rma but I wanna fix it before :)

I have a Nexus 7 Wifi, unlocked rooted and with latest paranoid android but with old bootloader. So let's upgrade the bootloader and have a fresh start!

At work I used a XP machine.

Latest Nexus Toolkit v5, Drivers installed (koush ones).

Factory Restored to 4.2.2 latest bootloader and then installed TWRP.

Booted perfectly to 4.2.2 and copied over the Gapps and latest paranoid.

Reboot to recovery and make wipes, I mesed up, Factory reset and format (ouch). System wiped and just the TWRP, but I saw OTG support, plugged my USB with the zips, not working... Googled about: It worked on CWM , so again fastboot and flashed CWM, but no OTG support...

Then I tried to copy with ADB Sideload and boom! nexus 7 not recognized...

Whenever computer I tried. Mac OS X, Windows 7, Windows 8, Windows XP (differnt machines), I got this message:

So i've got a nexus 7 with fastboot and CWM nothing more.

Any advice. I've tried Android SDK etc.
[Nexus 7 Q&A, Help & Troubleshooting] cammykool:
mine will charge but wont transfer data wont be seen from BL recovery or anything will ASUS RMA it if it has slight damage to corners and if it is rooted?
[Nexus 7 Q&A, Help & Troubleshooting] jrTrack:
Nexus7 Unrecognised.

:laugh: If you have enabled the Developer options then try disabling it (including the USB debugging) via Settings|Developer options. Then re-connect the device the MTP.

Hope that works.

jrTrack
[Nexus 7 Q&A, Help & Troubleshooting] sep33:
I have the same issue. Mine will charge and recognize PTP but not MTP. Tried turning off the development option and then while it connected turn it on and nothing. Will be trying some other stuff that was posted earlier. I am running windows XP 32. Any other suggestions?
[Nexus 7 Q&A, Help & Troubleshooting] sep33:


Okay maybe I am a little slow. This USB drive is to he downloaded on the nexus and unzipped on the nexus and then it should work?
[Nexus 7 Q&A, Help & Troubleshooting] lewmur:
When using XP you need the MTP Kit and Media Player installed. Then you have to *remove* the "Android Device" driver via Divice Manager. That is the incorrect driver XP install when you first connected the N7.
[Nexus 7 Q&A, Help & Troubleshooting] sep33:


What MTP kit? And media 11?
[Nexus 7 Q&A, Help & Troubleshooting] lewmur:
The MTP kit found here and whatever the latest Media Player is available from Microsoft's downloac center.
[Nexus 7 Q&A, Help & Troubleshooting] sep33:


Thank you. I did everything. Downloaded the kit. Installed the MTP drive, rebooted the computer like it said and then plugged it in and it tried to install. Hit yes with out and with disk and nothing at all. Do I need to have windows media ooe? Not sure what I am doing wrong. Thank you for the tips just not sure if I am doing this right
[Nexus 7 Q&A, Help & Troubleshooting] sep33:
Well I have tried everything and nothing. I have a dell xps 410 and nothing has worked. I did plug it in at work and it did work there but my files are here at home. Will try airdroid
[Nexus 7 Q&A, Help & Troubleshooting] lewmur:
Your previous post said nothing about installing Media Center or removing the Android Device via Device Manager. So obviously you haven't "done everything".
[Nexus 7 Q&A, Help & Troubleshooting] sep33:
I am sorry if I wasn't detailed enough. Yes I did try uninstalling drivers and installing them I do have media center installed, I also ran updates for the PC and that didnt work. If I sounded as if I wasn't grateful for all the suggestions I am sorry to everyone who has posted suggestions. I was merely trying to say that I have tried all the suggestions on here and I thank everyone but it didn't work. I was also trying to reference that the H7 does get recognized on my home PC but does at my work computer fine and not the Dell.

I was trying to make this reference because I have gone through this thread trying to fix the problem on my home PC with no luck. In the end thank you for everyone who has suggestions and were willing to share what has worked for them. I am not giving up as I think my next step is to use a flash drive and put the information I need on it and try to transfer them at work.

Thanks again
[Nexus 7 Q&A, Help & Troubleshooting] lewmur:
I seldom use the cable to tranfer files anyway. The free app "Wifi File Transfer" in the Play Store is much easier to use IMO. Of course, this assumes you have a wifi LAN setup at home.
[Nexus 7 Q&A, Help & Troubleshooting] sep33:
Thank you. I do have wifi at home. I will have to try this. Again thanks for the heads up
[Nexus 7 Q&A, Help & Troubleshooting] JeanPi23:
Hello guys. I have found a solution for the exact same problem that might work for you guys. I went to device manager in my windows 8 pc and uninstalled the Nexus 7 and DELETED THE DRIVERS. Thing is, i had previously installed the drivers from the Nexus 7 toolkit. After deleting them, i unplugged and plugged the nexus 7 again and let windows do it's thing. The tablet was instantly recognized as a mass storage device.
[Nexus 7 Q&A, Help & Troubleshooting] reeza:
Thanks Jean. I gave that a shot, unfortunately didn't help. Hope it can help someone else. Thanks for the input.
[Nexus 7 Q&A, Help & Troubleshooting] sep33:
Yeah not sure why but it hasn't helped. Thanks to everyone for their input and help. It works and reads it at my job I might just need a new PC at home
[Nexus 7 Q&A, Help & Troubleshooting] mephistakitten:
Having same problem...

I suspect that USB 2.0 vs 3.0 ports might be one aspect of the problem. My standard plug is on the monitor and is probably usb or USB 2.0, while the ports on the front of my machine are 3.0. For some reason, devices have been having issues when connected to the USB ports on my monitor.
[Nexus 7 Q&A, Help & Troubleshooting] sep33:
Thanks for the input on the USB 2.0 vs 3.0. Didn't know there was a difference. Will have have to check my work one
[Nexus 7 Q&A, Help & Troubleshooting] gnome9er:
no fix

I have tried everything to get this tablet to recognize in windows. What do i do? It was once able to be recognized then it just stopped working one day after using a different charger. Nothing has helped ive tried everything mentioned in this thread. I cant take it back cuz its used any suggestions please so many people have this problem i have noticed no solutions.
[Nexus 7 Q&A, Help & Troubleshooting] Confused Chimp:
Fixed my Nexus 7 :D

Managed to fix my Nexus 7. :laugh:

Symptoms I was experiencing:- could connect Nexus 7 to any PC, but either wouldn't be recognised at all or would show up as Nexus 7 under My Computer but I couldn't see any of the file structure. I can charge it without a problem, although most of the cables I have seem to be too loose in my Nexus 7 and so poor connection usually is the only reason it doesn't charge. When I first bought it I had no problems, and could connect it to my pc and transfer files etc. But recently it stopped working, I tried many cables and purchased a few as I thought it was a cable fault, particularly as the fitting isn't very tight.

But for me it was simply a software problem. Powering off the Nexus 7 didn't work, as its still a warm boot. I performed a cold reset, which is different from a factory reset. When you turn the power off on the Nexus 7, I assume some of the settings, data etc. is cached to the internal memory and so making booting faster.

To perform a cold boot:

1 - Power off your Nexus 7 as normal - (not standby, but properly power it down)

2 - Press and hold the Down volume button, and whilst continuing to hold it...

3 - Press and hold the power button. Keep both buttons pressed until you see the boot loader screen. - This is a screen where you see the little android robot on his back with his belly open. The touch screen doesn't work in this mode, you have to use the up and down arrows to select which option you need and then press the power button to confirm whichever option you have selected with the volume buttons.

3a - I choose to go into recovery mode next. I don't think this is required and I'm not suggesting you do. As I couldn't get the device to respond in this mode. It just sat there which a little red warning triangle in the middle of the screen with the words "no command" on screen. After a while I got bored of waiting so just pressed and held the power button and it reset itself and it now works fine with my PC again.

4 - Suggest you just choose start. which should cause the Nexus 7 to perform a cold boot. Hopefully this will mean the device will be recognised correctly by your computer.

Hope this helps some of you. Saves doing a factory reset. It worked for me, no garrentee it will work for you. Proceed at your own risk.

Cheers

CC :laugh:
[Nexus 7 Q&A, Help & Troubleshooting] gnome9er:
gonna smash this thing

Thanks for the response however i have tried this many times. The darn thing shows up as unknown device no matter what pc/os/cable i use. I cant use adb/fastboot all it does is charge and since i bought it used im guessing i cant return it. There has to be somebody who fixed this since there is so many people with the same problem.
[Nexus 7 Q&A, Help & Troubleshooting] barduds:
i have windows xp at first it didnt see my n7 what i did was update my windows media player to 11 installed adb drivers for n7 i restart the pc disabled the usb debugging mode and it worked.. my xperia s has no prblem detecting when connected to pc.. sorry for my english
[Nexus 7 Q&A, Help & Troubleshooting] AvidHelp:
What worked for me (on Windows 7x64) was:

Plug the Nexus 7 into your computer with the USB cable.

Open Device Manager.

Find "Samsung Device" near the middle and expand the node.

Right click on only "Android Composite ADB Interface". and select uninstall (I chose to delete the current driver as well, not sure if that matters).

Unplug the tablet and plug it back in.

At this point my Nexus 7 was recognized as an MTP device and allowed me to transfer files again after about 20 seconds it showed internal storage in explorer.​

I wanted to share what worked for me since the this thread topic still seems to be a common frustration today.
[Nexus 7 Q&A, Help & Troubleshooting] princebala:
i am having the same problem here

the sad thing is my device is not even showing up n device manager as a unknown device

i am badly in need of rooting my device, but coudnt do it bcos of this issue

is there any other way to root the device and unlock the bootloader without connecting the device to computer?
[Nexus 7 Q&A, Help & Troubleshooting] Corintio:
My solution

Hello there! Guys, this is how I solved it on my 64 bit Windows 8. I'm sorry the screenshots are in Spanish (my mother tongue), but I believe they're easy to follow.

First, in device manager I clicked on my Nexus 7 and selected update controller:

I chose to select my own drivers, on my computer:

And here comes the fun part: remember to leave show compatible hardware checked, and you'll see the different ways your computer can deal with your tablet. Then, just select MTP USB.

And here it is! I can't see the fancy name (Nexus 7), but I can copy files to and from it, so I'm a happy camper. :cowboy: :good:
[Nexus 7 Q&A, Help & Troubleshooting] skookidoo:
Fix for no USB storage

Well, he's right. It's just a simple driver problem.

Right Click "My Computer"

Click "Device Manager"

You should see "Google Nexus 7..." device.

Click on it

Click Driver

Update Driver

"Let me pick"

Make sure "Compatible devices ...." is checked

Choose USB (the one that is not selected)

Click Ok.

And Woop, there it is.
[Nexus 7 Q&A, Help & Troubleshooting] vilary:
It Worked!

I just turned off USB as you mentioned on your comment and low and behold it worked! Now I can see my Nexus 7 icon under "My Computer"

Thanks!
[Nexus 7 Q&A, Help & Troubleshooting] banimark:
hi, i had a problem with usb. it would charge but wont connect to the pc. Did everything that was suggested here and nothing helped. so i did some research and solved my problem.

1. delete old drivers for my nexus 7

2. do a factory reset

3. download and install user mode driver framework that will fix the inf error (a service instalation section in this inf is invalid) from here: http://xdaforums.com/showthread.php?p=9740142

4.download the official asus nexus 7 usb drivers from here: http://support.asus.com/Download.aspx?SLanguage=en&m=Nexus+7&p=28&s=2

5. install the drivers tutorial: http://www.youtube.com/watch?v=vUSRmtexmUo

for the first two steps i dont know if they are neccesary but i did it just in case.

hope this will fix your problems
[Nexus 7 Q&A, Help & Troubleshooting] rryyaannbb:
rotation

I know this sounds silly, but I was having the same problem. (not getting a response from the computer).

Eventually I just tried turning autorotate on (it was locked before) and now it connects fine.
[Nexus 7 Q&A, Help & Troubleshooting] TheSopranos16:
I'm having USB problems as well. I read through this thread and none of the suggested solutions are working for me so far. In my case, both my tablet and my computer do nothing when plugged in via usb. The tablet charges, but thats it. Nothing shows up in the notification area of the tablet and nothing shows up on the computer either. No sounds, nothing. I have tried several cables in several computers and still, nothing. Any suggestions?

EDIT: I've even tried safe mode and fastboot mode. Still, nothing.

EDIT2: USB OTG cable works fine so I doubt its a physical issue.
[Nexus 7 Q&A, Help & Troubleshooting] cobrajocky:
This is a response to an old comment above. This problem has NOTHING to do with Windows 7. I have TWO N7's - and early N7 8GB and a new N7 32GB. The old N7 8GB has NO PROBLEMS connecting via the same USB cable in MTP or PTP modes, while the new N7 32GB absolutely will not (neither is or has ever been rooted). It is clearly a bug in an out of the box N7. Don't be blaming Windows 7 or Vista, neither has a problem with my old N7.

HOWEVER, if Windows has an OLD set of drivers (like before a Android update), Window continues to use the old USB to Android drivers. As is mentioned above (post) you must delete the old Nexus 7 drivers from the device manager, reconnect your Nexus 7 and let the new USB MTP drivers be installed. Presto, no problems.
[Nexus 7 Q&A, Help & Troubleshooting] megabeet:
This worked for me. Thank Christ, because I had already sold it on ebay (£110!) and had casually asked the guy if he wanted to stick with the cool ROM I'd installed and he said no, and I'd forgotten that it had stopped talking to USB last month!!
[Nexus 7 Q&A, Help & Troubleshooting] Choriandus:
My nexus 7 doesn't show up on my PC as well! I have to connect it as a camera and transfer files to the available folder. Then i use file manager app to move them out on the tablet later.
[Nexus 7 Q&A, Help & Troubleshooting] LoVeRice:
just uninstall the driver and then connect again your nexus