i use w2k .... my machine doesn`t power on/off automatically even though it has an ATX power supply. By default it should turn on/off automatically. i have checked all my connections regarding wires & cleaned the dust also .... have 2 manually start it or shut it down ... which is painfull .... had deleted some files (dll & exe files) RSP001.DLL BHO.DLL WinStart.exe BHO001.DLL ipinsigt.dll Rsp.dll WinStart001.EXE Update_com.DLL CGJ.exe msbb.exe which norton had detected as virus .... has deleting this files created this problem .... now in system properties my comp is shown as AT/AT compatible ... how can i change it back 2 ATX compatible ????? plz can anybody tell me whot the problem is ????