Okay, so my Nvidia graphics card was running a little slow so I updated the drivers using Nvidia Experence and restarted the PC. When it loaded up it went to a for screen in a small window. I had to alt+cntrl+delete to open up explorer.exe and it popped right up. I tried accessing the internet, but couldn't access with my on board Windows card or my usb Wi-Fi stick. I tried changing some network adapter settings, but it said I didnt have adminstrater priviligaes. I tried loading explorer.exe with admin priviligaes, but still said I wasn't admin. I uninstalled all Nvidia drivers and even did the regedit for the shell. I loaded up another hard drive and did many virus scans in safemode, with no luck. Please help.