Put a boot able disc in the optical drive.
Set the boot order in the bios to optical first.
Boot the machine.
hello! i have a HP p6258. it gets stuck on the hp opening screen. i unplug everything from the m2n7b-la (violet) motherboard and reboot. one 2 second regular beep and one longer regular beep with a black screen (no indication of a signal getting to the monitor, either). i then plug in one RAM stick, i get no beeps and,"reboot and select proper boot device or insert boot media in selected boot device and press a key". when i add the DVD or HD back to the motherboard, i'm back to getting stuck on the opening screen.
i can't find a comprehensive manual on the MB for the beep code, but doesn't getting a beep indicate the MB is ok and then i should try to find what is causing the hangup on that opening hp screen by those beeps?
thanks again for the knowledge!