Others may have a different answer, but in my opinion, if you let it run that long with no errors, your memory most likely isn't the problem. Let me read through again to come up with the next step to try.Gutlass Cutlass said:Memtest been running for 20hrs and 30mins. No errors how long i gotta let this thing run??
EDIT: The problem now is, you can boot to the desktop, but it locks up 3 second afterwards? Try booting into safe mode (hit F8) during the boot screen. If you can get into safe mode okay, the problem is likely a driver. Once in safe mode, uninstall all drivers you loaded and reboot. Load them again on at a time, rebooting after each one.

