Don't know what's going on here. Talked to Dell support and they put\nme in a "rebooting" category, which is not my problem.\n\nI have a Dell Optiplex 755, 4GB ram, intel core 2 duo processor E6550\n@ 233GHx. Running Windows7 Ultimate x64.\n\nThis computer boots up on it's own. For awhile, it would start, run\nfor 10 or so seconds, and turn off. It did this every 10 or 15\nminutes. Now it completely boots on it's own unless I disconnect the\npower cord.\n\nI ran the system diagnostics program and found no errors. I checked\nthe BIOS and made sure that nothing external can wake this machine up.\nI am at a loss. Any ideas would be appreciated.