[Nexus 5 Q&A, Help & Troubleshooting] Spaceblow:
So I have a problem with my Nexus 5. Yesterday I tried all kinds of different Lollipop roms and at the end of the day I sticked to Cataclysm. I liked it and my phone was all set up but I noticed there were a lot of unnecessary folders on my internal storage and a nested 0 folder (0 inside /0). I didn't like that so I thought about making a nandroid backup, storing it on my computer (together with my music etc.), wiping everything and restoring it by using TWRP and then eventually putting my music back.

So after I stored a backup on my computer, I started my device into recovery mode and chose the option 'advanced wipe'. Usually I would do a lot of research for everything I do but in this case I was a bit lazy to do that, I tried digging into the search results of Google concerning wiping but I gave up after some unsatisfying results. So I checked every box in the list, including data and system and went through with the wiping. So because my storage was completely wiped I didn't have a 'WRTP/BACKUPS' folder anymore. I made a backup from the stuff I had (which was only a few mb's) so I would have that folder again (otherwise I wouldn't be possible to locate my nandroid backup). I wanted to transfer my nandroid from my computer to my phone by connecting it through USB but for some reason the Nexus 5 didn't show up on my PC when it was booted in recovery (this sometimes happens for some reason)

I managed to do it by using 'adb push Cataclysm folder' in cmd. I went into recovery and restored my backup. My phone booted and I thought everything was as it should be. The wallpaper was black but that was logical because my internal storage was wiped, including my custom wallpaper. But then I noticed something strange, my status bar disappeared, sames goes for my navigation bar. I really have no idea what happened because I've restored nandroid backups before and everything went fine.

So then I put a clean version of Cataclysm on my phone and for some reason it asks me to insert a SIM-card into my device while it has one. I skipped that step and then it asked for my home Wi-Fi and I chose mine, then it checked the connection way longer than it would normally do. After I was done with all the steps my homepage entered my screen and guess what, my status bar and also my navigation bar were absent. It was like my cell phone was in immersive mode all the time. Then I tried flashing the KitKat factory image by going into recovery with my phone and opening 'flash-all.bat' on my PC but then it said '< waiting for devices >' while I enabled USB debugging... I opened cmd and typed 'adb decives' and mine showed up, so it was connected (although it now says 'unauthorized' when my phone is normally booted).

Then I flashed clean Cataclysm again and it again said I had to insert my SIM-card and it then again checked the connection with the Wi-Fi for a couple of minutes. When I was done with the installation I tried replacing the wallpaper with one from Lollipop but it didn't work although there was a preview available. There was again no status bar and navigation bar. I then opened chrome and went to this website and now I'm typing this on my Nexus 5 which has a permanent immersive mode now.

So I don't have much in my internal storage anymore, only a TWRP folder with backups, nothing more, not even a 0 folder if I'm not wrong. There's something wrong with my mobile connection and definitely something going on with my navigation bar and status bar. I hope anyone could help me with this because this is really frustrating becausr I tried to fix it for the last couple of hours, unfortunately without any result...

EDIT: I forgot to mention that when I was trying to figure out how to send the nandroid without being able to access my internal storage via my computer, I booted in recovery, went to 'advanced' and then to 'adb sideload' and tried that because I saw it somewhere on the internet. I somehow believe this contributed to the problem I have.

EDIT2: Now, when I try to power off my phone by holding the power button, it reboots the device instead, what's going on... And as I said, I have a black screen as wallpaper for some reason and I can't change this, but if I open my weather widget, the widget window shows up with my chosen wallpaper on the background, what kind of sorcery is this?

EDIT3: I wanted to download a terminal emulator from Google Play to do this but I couldn't get to 100% so I thought there was something wrong with the app on my device. I googled the apk and I wanted to download it from Zippyshare and when I clicked on the button 'download now', the phone showed the message 'no SD card', so I guess that's the culprit of all of this?

TL;DR My phone is acting really weird (no status or navigation bar, phone reboots instead of asking whether I want to have it shut down when I hold the power button, the wallpaper being strange, SIM-card isn't being recognised) after I wiped data and system and actually everything...