[Eee Pad Transformer Q&A, Help & Troubleshooting] wontstoptalking:
Ok, I am MAD. This is unsolvable. I can't figure it out.

When I plug the Transformer into the PC, the PC won't detect it. It did a couple of days ago. I plugged it in to move some files over. It showed up as a drive before, but not anymore. The TF is brand new from Christmas, and it actually worked just fine Christmas day (I was able to transfer over some photos).

Two things happened between then and now that I can think of:

1. I used a System Restore to go back a few days because of a bluescreen issue that is unrelated and that I solved. It only went back literally one day, though.

2. I tried to delete some of the stock apps installed on the transformer. Not through root trickery or whatnot (I'm not even rooted or modified in any way). Just by going to the app market and trying to remove some crap (of course I couldn't).

I plug it in. Windows says "detecting driver," then it says it failed. USB debug mode is on. So I went into device manager. It shows up as "MTP Device" or maybe just "MTP," and Device manager gives it a question mark. So I went to Asus's site, downloaded the USB drivers, and installed those. No go. So I turned off Debug mode. No go. If I have debug mode on and plug it in and go to Windows Update, it shows an update for "Asus MTP Device" or something like that. I do the update and it gives me an error, saying the device is not connected. It is.

I've even installed the stupid Asus Sync Suite. It decided I wanted like five different startup programs. Revo Uninstaller made quick work of them, stupid bloatware.

So I've made no progress. Not sure why I could do it before, but I can't anymore. One thing that was weird when it WAS working was that my computer didn't get USB 2.0 transfer speeds from the device. Music copied agonizingly slow and my PC told me that "this device can perform faster if plugged into USB 2.0," even though all my ports are 2.0.

Currently, all that happens when I plug it in is Device Manager shows "MTP Device." HOWEVER, something interesting. When it's plugged in, the "safely remove hardware" icon shows up in the tray. If I click it, I see "Eee Pad Transformer." So the PC DOES detect the device, it just can't access its storage.

I'm on a Win7 PC that I built. I'm totally updated. The Eeepad is totally updated.

Oh, one last thing... I *might* have gone into the filesystem explorer app that came preinstalled to the device. I noticed that there were some folders from apps that I had installed but then uninstalled, and that bugged me, because if I uninstall a program I don't want that folder laying around. So I deleted some. But none were preinstalled apps. Things like Angry Birds, apps that I installed.

I read some thread in my google searches about something like UMDF or whatever. I tried that, but it seemed to only work for people with Vista or XP. The exe wouldn't even run on my system.

if anyone can figure this out, they'd have my eternal thanks.

You guys are awesome,

wontstoptalkng

ps,

I read through this thread a bajillion times:

http://www.transformerforums.com/fo...ormer-manual-usb-drivers-sync-software-2.html

I tried the method used in post 12, which is what worked for the OP. It didn't work for me, either because that method doesn't work on Win7 or it doesn't work on a 64bit os.