Question about ASUS P4P800 SE (890552603657) Motherboard
Have you checked the ram?
Take out the Ram, if you have more than one stick, then replace them one at a time and power up with on first if it works then add the other one. If it doesn't work, remove the first stick and replace it with the other one and power on again.
This could be caused by bad or dirty ram. (while the sticks are out clean the, with a soft dry paint brush and the slot that they fit into, and when you replace them, make sure that they are replaced gently bur firmly and click back into place)
I hope this helps
Posted on Dec 05, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
This issue can be caused by any of the below possibilities.
Make sure the monitor is on. If no power light (green or orange light) is seen on the monitor display try pressing the power button until it comes on. If no light comes on after several attempts continue to below connections not connected properly.
Computer is asleep
If your computer monitor was on and you stepped away from the computer and upon returning it was black it's likely that the computer is asleep. Try moving your mouse, clicking the mouse buttons, and/or pressing any key (space bar) on the keyboard to wake it up.
Make sure that you are connecting the monitor to the back of the computer in the 15-pin connector as shown to the right or older computer 9-pin connection.
If the computer is properly plugged in, make sure it's getting getting power.
If you are not receiving power from a known working wall outlet and if the power cord is removable, replace it with the one connected to the computer and attempt to power on the monitor again. If the monitor still does not get power or it is not removable, it is recommended that the monitor be replaced or serviced at a local TV / Computer repair shop.
If the monitor is receiving power, check the status light.
If the light is orange or flashing ensure that the monitor is not in a suspend mode by moving the mouse or pressing a key on the keyboard. If the computer does not get a display by moving the mouse or touching the keyboard, turn off the computer and monitor and reconnect the data cable from the back of the computer, and if removable, the back of the monitor. Turn the computer back on; if you still encounter the same issue, continue reading through the other possibilities.
Ensure that the brightness and contrast is turned up or attempt to adjust the brightness and contrast. If adjusting the brightness or contrast has no affect on the monitor continue reading through the other possibilities.
Does the computer beep when it is powered on and/or does it appear that the computer has activity? If the computer does not beep or beeps abnormally it is possible that the computer itself is experiencing a hardware issue or is exhibiting a No Post.
Steps on troubleshooting an irregular POST or no beeps can be found on document CH000607.
If you have followed the above recommendations and are still encountering the same issue, it is likely that the computer may have either a bad video card or monitor. The best method of determining this is to do one or both of the following
If your monitor works on another computer it is safe to assume that the video card or potentially the motherboard within the computer is bad. Steps in troubleshooting a video card can be found on document CH001028.
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