Black screen/flickering toolbar on logon

Hey people,

Broke my shit. Here's the sequence of events.

Playing WoW, got a blue screen. Don't remember the error name, but Googled it and found suggestions to do a memory check and a chkdsk. Did the check disk on my primary drive, but it wouldn't because "Access denied as you do not have sufficient priviliges or the disk may be locked by another process. You have to invoke this utility running in elevated mode and make sure the disk is unlocked". Ran it on my storage disk, went fine, no errors, so moved on to mem check.

Mem check did two loops and system booted to login screen. Login screen worked, but actually logging in took a minute (usually 1 seconds, SSD). I see the background, but I see the taskbar minus icons. Can't click on it but desktop works fine. For about 20 seconds, everything but the mouse freezes and the taskbar starts flickering, then a few seconds later everything but taskbar goes black.

At this point all I can do is go to ctrl alt del to get to task man so I decide to restart. Keeps happening. Do a safe boot with networking, get "unknown hard error" but it goes in as long as I don't click okay, at which point it does freeze fully.

Tried disabling startup stuff, no luck. Stupid me disabled backups when setting this box up drunk so can't turn back windows. Other suggestions welcome.

Cheers.

EDIT: As I was texted here asking if I ever found a solution, for future Googlers, I ended up having to do a full reinstall. Lost a lot of data. Back up your shit.