The only reason I mentioned the network controller was because it was in a windows update that I have not installed yet. I was just asking if it could have anything to do with the problem I am having because I know almost nothing about computers and I have no idea what a network controller is. The monitor has both a DVI and VGA connection on it, so I have the DVI connected to the graphics card using one cable (white), and connected to the on-board graphics with a different VGA cable (blue). I am using 2 cables for 2 different connections because in the past when both were connected, the computer would use the better one (DVI) and only use the VGA if I diconnected the DVI. Even if I ONLY use the DVI cable and not the VGA cable, the screen will simply remain blank.
I have already done what you suggested, and like DEATHKNIGHT, have cleaned everything out, uninstalled all drivers, only installed the 8500 driver and STILL nothing helped. The graphics card is still not working most of the time.
Now that you mention it, I have also noticed a weird noise coming from the graphics card when I first turn on the computer. Like the fan is trying to turn on full blast but can't and keeps trying over and over for about 7 seconds, then stops and runs normally. I liken it to the graphics card version of someone reving a motorcycle engine about 10-12 times. I also think my problem started after some kind of update, which is why I restored my computer to when everything was working and there was no update and it worked for a while, then after I installed the update again (because I didn't think that was it), everything went wrong again.
Any ideas anybody?