This Dell Dimension 8100 had Windows XP Home version. I made it dual boot with Windows 98 because one application that runs only in Windows 98 is needed. Machind worked OK as dual boot but Windows XP had issues , like runs slow, etc. I added 1 GB of Ram and Windows XP greatly improved. BUT, Windows 98 now won't start. Just continues saying "insufficient memory", and "remove utilities", etc., as another posting on this forum. I tried starting over, removed the 1 GB RAM, went back to the original 512M RAM. But now it occasionally won't display on the screen, or when it does, it still won't boot in Windows 98. So now it's just a Windows XP machine. I hope there are some suggestions to get this fixed as a dual boot machine again with the additional RAM. Thanks