When I started up windows XP Pro this morning, the display came up bank (dark blue, not THE blue, but nothing at all on the screen). I forced a shutdown and attempted to start up in safe mode - it threw THE blue screen with a message that referred to stopping to avoid damage to my system with the message IRQL_not_less_than and the message STPO: 0x0000000A (0x91D43770, 0x00000002, 0x00000001, 0x804 e6651) - and then restarts with the same result over and over. I took detached all hardware, connected the desktop to another monitor, keyboard, and mouse - and turned off the on board NIC via set up. Tried to start in safe mode and got the same result. Can anyone please help?