hmm? so the 10.2 driver didnt install then, you ended up with an earlier version.
I reread your opening post and noticed you said the computer was choked with dust, this dust may have caused permanent damage to the video cards processor or a component on the card its self.
Since you said it runs ok in safemode, where the video card is at 800x600 pixels and probably in 16 colors, it servives because the processor is at standard speed and is not generating any heat.
It might be safe to say the video card its self has subcumbed to heat damage and needs to be retired.
As a last resort, before discarding the video card, you could try cooking the video card.
If what I said above strikes you as strange, well it has been done and has in some cases cause a dead, faulty card to function normally again.
Here's the recipe.
Preheat an conventional oven to 300 Degrees F.
In the meantime check the video card for any plastic parts that might melt from the heat, remove those if you can.
Once the oven is up to 300 degrees F. Place the video card into the oven as level as possible and wait 10 minutes, turn off the oven and wait 10 more minutes, then open the door to the oven to allow cooling to continue, DO NOT MOVE THE CARD! After 30 minutes remove the card and try it again in the computer.
Point of doing this is to re-flow the solder on the connections on the video cards components, sometimes this corrects a hidden faulty solder connection on the board.
Good luck and if you try it and it fails, try it a second time, sometimes it takes 2 or 3 attempts before the connection seals again.
Conclusion, if that fails to correct the problem, the card's processor has over heated to the point its core is failing and needs replacement.
Edited by MrBruce1959, 26 June 2010 - 01:20 AM.