I found an old PC that hasn't been used for a while because its hard disk was taken to substitute a damaged one in a newer PC. I installed an old 4 GB hard disk from another PC and it seems to work fine. What troubles me is that it doesn't have a cpu fan, it only has a heatsink. I think someone could have taken the cpu fan to install it in another PC. Anybody knows if a Pentium 200 Mhz MMX is supposed to have a fan?