Among other problems, the admin account on my computer is probably corrupted. About 7-8 months ago, when you signed on to the admin account, the wallpaper was black and all of the desktop shortcuts and icons had disappeared. Soon later, the password for logging on didn't work at all, so it was impossible to get onto the account. But the main problem is the password for installing and updating most programs. It is bugging me that I cannot install anything or update anything as I need it for school, youtube, and gaming. Other problems (if these help): BSOD: PFN_LISTCORRUPT None of my iOS devices show up My GPU started freezing, crashing and blue-screening my computer. (Probably the driver) APPCRASH APPHANG B1 Specs: Windows 7 Home Premium 64 bit intel core i5 8GB of ram 1TB internal storage, 2.25 external storage intel graphics 2000 (Removed ASUS RADEON HD 7770 GHz edition because it caused me problems) Help appreciated!