I have an older Dell Dimension 8400 desktop. As far as I can see, it works fine except that once in a while the display screen goes entirely black (cpu still running) and when I boot it up again it reports the 0x000000EA error, then works ok for a while before the next crash. Following the advice on the microsoft website, I downloaded the latest driver for the ATI Radeon X300, but the same thing happened after a few days. Then a switched off all graphics card acceleration but instead got a blue screen STOP 0x0000007E error after a few days. Manually rebooted and it was fine again. Have been considering changing my graphics card (since it is ~5 years old but is PCI-e x16 anyway). Just wondering if it would be a wise decision? Thanks in advance for any help & advice!