I have looked everywhere and cant find anything on this problem, possibly because its hard to look for in a search engine.

When i boot my computer, i get random pixels everywhere in the background. On the first screen i get lines running vertically. On the second i get big green squares all over. and even right now in safe mode i get little light green squares and half squares all over certain areas like this blue topic thing i am typing in and my scroll bar. The computer randomly froze on me and when i tried restarting this occured, when windows is loading before it loads the users the screen goes black and jst stays there. I can boot into safe mode but the pixels still show. Every once in a blue moon i can boot it and the pixels wont show and my computer works fine for a while until pixels will run diagnally across my screen then it will turn black then i am right back here.

I am running vista currently and i have reformatted my hardrive SEVERAL times and have tried xp as well. Somtimes it wld WORK for a few boots before messing up again, sometimes it wouldnt work at all. I have ran AVG VIRUS scan over and over and nothing. I have ran a registry cleaner nothing. I dont really know what else the problem can be. Are my bios messed up? what and how come it works every once and a while.

Any help would be greatly appreciated, i have backed up what i must have and will do whatever to try and get my computer to work.

- oh yah, i have a Dell Precision M90 laptop. Can you hookup the laptop to an external monitor and see if the problem still exists.

Also have a look in Device manager for problems with your video card.

Seems to be various issues with the model..

http://www.nvnews.net/vbulletin/showthread.php?t=124186no, i can go buy a cord and hook it up to my tv and see. but would that stop it from booting up normally?

and i actually just looked at my device manager right before i seen that post, it says its up to date and all, should i try uninstalling the driver and reinstalling it?Corrupt drivers MIGHT cause the problem.....I read all those posts and their are a few things i can try, so thank you. However i uninstalled my video nvidia driver and now when i download and try to install it, it claims i am not using windows... and dont install the driver.