Let me start off with the specs – this is a custom build:
Windows 7 Home Premium 64-bit OS
Gigabyte GAH61N-USB3 mobo
Intel i5-2400 CPU
4GB Crucial Ballistix Sport DDR3 1333 RAM
1TB 5400RPM 2.5" HDD
MSI N620GT-MD1GD3/LP GeForce GT 620 GPU
Slot-loading CD/DVD±RW optical drive
Dell 2208WFP 22" LCD monitor, hooked up on DVI
The problem I'm having is that on bootup, everything looks fine and runs normally until the logon screen is supposed to come up. After the initial Windows loading logo, the screen goes completely black and then the monitor falls to sleep. Nothing will wake it up, and I can't connect via VNC either so I think the computer is hanging at that stage.
However, in safe mode, the logon screen comes up fine and I can login and everything works properly. In device manager, the graphics card shows up properly, but when I go to the screen resolution settings, it does not display the name of the card.
I have tried switching to VGA and that doesn't work. My BIOS is set to PCIE graphics primary, onboard graphics secondary. The onboard graphics work properly if I disconnect the graphics card. All the drivers for the graphics card are installed and were working before this started.
I have tried reinstalling the drivers but that didn't help. The only thing that temporarily worked was to disconnect the graphics card, uninstall the onboard graphics drivers, and then restart and reconnect the graphics card. However, after I restarted a second time, the problem reappeared and the screen went black after the logo.
I'm pretty much desperate here; reinstalling the OS from scratch is going to be way too much of a hassle, especially with the amount of applications I use. Any help would be greatly appreciated!