[I'm really struggling to type this on my phone] (Fixed the grammar on another computer), basic info: I can't boot my computer in normal mode or safe mode. When I try to do so, after the "starting windows" page the only things that come up are my mouse, a black screen/background, and a "logonui.exe-bad image- Authui.dll isn't designed to run on windows" error/message (not the exact message). I can't use a system restore (it can't find a restore point), the image recovery tool finds no image to restore from, system repair either doesn't find a problem or can't fix the problem, and basically nothing else works (none of the advanced boot options or other various buttons and tools do anything noticeable). I've even tried to use sfc in command prompt, but whenever I do any sfc things at all (/scannow, verifyonly, verifyfile, etc.) it says there is a system repair pending that requires a reboot. I've restarted 7-8 times and the exact same message keeps coming up. I'm looking for any general help I can get right now, [I can post my computer specifics in an hour when I have time](posted a few). I have an HP pavilion dv6-6135dx wiht Windows 7 x64. Edit: not sure what info is helpful, but here is some: Processor: AMD a8-3500m APU, raedon graphics bios vender/version: insyde, f. 20 I'm having trouble getting more info because my computer is still crashing occasionally and I don't really know what else is relevant; if you need more, I might need directions on how to get it. Especially if it involves command prompt. I should also add that it has been crashing more often than I think is normal ever since I got it, but recently it BSODed 3-4 times a day. I have antivirus and also ran a full malwarebytes scan yesterday, and it only found one little issue which was resolved.