System: AMD K6/2-500, 256Mb Memory 3 HDD's & 48xCDWas on the net when suddenly the screen went blank, followed by a beep - the PC had re-booted. It now boots as far as the Windows ME splash screen, then re-boots again in an endless loop. I can't boot into Safe Mode or Bootlog.txt mode. Step by step loading doesn't work either (same result). Running diagnostic checks via the emergency disk indicate that the hard drives are ok along the registry. Can't even reinstall the OS due to an "outside dos extender" error. A challenge?