Hi all, I'm looking for some help. I am currently running a Dell Dimension 8300 desktop (4 years old!) I decided to try souping up the graphics. The card is a Nvidia 7300 GT by PNY. I also upgraded the PSU. However I have had alot of problems. I will list the steps I have taken - First I ran the card with a new 350w CHEAP psu. This worked fine for 2-3 hours of gaming before the display corrupted and froze. After this whenever I tried booting with the new card I would get slight glitches on the windows boot screens (some horizontal white lines/dots). The PC would get to the windows login then display a bunch of black and white stripes. I figured a high end PSU would fix this problem, so I invested in a 500w 'Bluestorm II'. I still get exactly the same errors on booting, the glitches are even in the same location on the screen every time. However I am now able to login to windows; ...only now wherever I move the cursor tiny little red/grey lines appear, then the graphics will start to crash. I have updated my graphics drivers and even the BIOS. Is this most likely a hardware or software problem? If it could be a driver problem, should I format the HDD? I don't think the card is damaged as it will display things ok for a while then starts to corrupt.