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My nVidia RIVA TNT 32 MB is showing vertical lines of different colours when i boot my computer the computer is not booting with it, i removed the card and the PC booted fine, whats the prob. with card. 
nVidia RIVA TNT 32 MB Issue
N
Hardware failure. Have it checked. Better still, ditch the Riva and get a better card.
Instead of spending on repairs, get a newer and better card.
A
2k for mx 4000 xxfx 64mb
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Actualy thats not my card but it is at my office.
R
Try tightening the Video data cable that connects ur monitor and the Card.
Also try Degaussing ur monitor.
Also try Degaussing ur monitor.
R
U can also try removing and reseating the card after cleaning it.
P
LOL, this is the perfect opportunity to convince your office admins to use a better card.
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Are u supposed to play games in office so why need a better Graphics card, thats what i think my BOSS will tell me when asked.
BTW I had already tried the above mentioned solutions.
BTW I had already tried the above mentioned solutions.