Hi, This is my first post and is the main reason I registered for this forum. About once or twice a day my Dell Dimension 4700 with XP shows me the Blue Screen. It says Hardware Malfunction, Call your hardware vendor for support. Parity check / memory parity error, the system has halted. I am looking for suggestions on how to fix this. When this blue screen appears, I have to reboot and hope it doesn't do it again while I'm in the middle of something important, like typing this! Thanks for any suggestions. I'm guessing it is a common problem on older computers. Mine is about 7 years old. Thanks!