PC will power on but monitor displays nothing.

I've tried with one stick of ram. I've tried another video card. I've tried with no hard drives or cd roms plugged in. My monitor still displays nothing but my pc will power on.

I have an asus p4p800 se, 2gb ram (4 sticks 512 pc3200), geforce fx 6800gt, 2 sata hdds, one ide hdd (boot device, windows xp sp2 home), 1 dvd rw/cd rw combi drive, p4 prescott 3ghz.

The monitor is a AOC 17" LCD.

I'm totally stuck.

 

Same symptoms, faulty mobo!

Replaced motherboard with identical new....all good!

Could well be something else though.

 

Ok, I don't want to spend $$$ on a mobo though without trying other things first.

I'm going to hook up a different monitor later, and I'll try resetting the CMOS also, I'm doubtful though.

 

The most common causes of your problem
Faulty ram
Faulty video card
Short or grounding condition, could be loose screw floppin around your case, skined wire such as front pannel stuff or even fans
Faulty monitor or cable
Faulty PSU
Faulty MOBO


Here's what I would do, if testing all hardware in another system isnt possible
24hr CMOS reset ( Unplug power from PSU, pull battery, press power switch to unload capasitors, reset jumpers if you have then let set 24 hrs.

Then assemble only basic hardware, out side of your case on a non conductive surface
MOBO
CPU HSF
One stick Memory
Onboard video or no onboard, then one video card
PSU
Monitor
PS2 keyboard & PS2 Mouse
(No other hardware is needed to Post & access BIOS)

Then try to power up & post if your able to enter BIOS set time & date save & exit, then reboot enter bios again make any necessary changes


If still no worky
You need to find away to test these components in a known working system

 

You may also want to check and make sure that there is nothing wrong with the monitor cable. I had the same problem only to find out that my nephew had unplugged my monitor to use temprorarily with his system and broke a pin when he plugged it back into mine.

 

Thanks guys.