You will have to or get someone to format & totally reinstall to go back to Windows 98. Others may disagree but I can't see any advantages in 98 over ME, it seems in fashion to knock ME without any justification I recently installed ME on a elderly 200mhz Pc without problem. Have the problems you are having recent or have they occurred over a period of time. Reinstalling may sort the issues but there could be other problems such as non functioning fans etc that are causing the crashes etc. Can you post back with details of your probs.