problem with asus p4p800
Check that all cards are seated properly; especially the video card (unless on-board).
Make sure also that drive cables are in properly at both the board and the drive. If you have disconnected and reconnected any drives recently, ribbon cables could be reversed or off-set, or drives could have jumpering problems. It may even pay to disconnect the drives both from the board and power temporarily, even if you haven't changed anything, in case a failing drive is causing problems.
Make sure also that drive cables are in properly at both the board and the drive. If you have disconnected and reconnected any drives recently, ribbon cables could be reversed or off-set, or drives could have jumpering problems. It may even pay to disconnect the drives both from the board and power temporarily, even if you haven't changed anything, in case a failing drive is causing problems.