Thanks for the reply. I was just looking at the bottom of my new hard drive box and noticed it has a disk at the bottom. I never ran the disk after install since my computer recognized the the new hard drive. Could this be a problem? I looked at the first program recommended. . . it requires an internet connection which my computer does not have (nor do I want). I have downloaded the Pi program and will load it up. I'll have to look up sisoft sandra and Memtest86. I have a memory test on the Ultimate Boot CD but I don't remember what it was. I think it took a few days to run so I skipped that one. Right now we have thunderstorms so I doubt I will be running my computer straight through for a few days. I loaded each game straight from the factory installation disk. My game computer has the following: Processor: AMD Anthlon XP 1600+ 1.6 GHz Math Support: On Chip BIOS: Award Software 04/30/03 Ports: 1 parallel, 1 Serial Memory: 256 MB Floppy: 1.44MB Hard Disk: 37.27 GB; 78 GB (New Disk) Multimedia: Sound, CDRom, CDRom Burner Video: 800x600 in 64 colors, Nvidia Geforce4 MX 420 ver. 4.0 BTW what is the safest way to clean the dust and keep the dust out of the computer?