Need advice for problem

Joined
Sep 27, 2009
Messages
5
Hi there, a friend of mine is having computer issues, he not being technically inclined brought it to my house for help.

Basically what is happening is that the monitor doesn't recognize the signal all the time. I turn the power to the computer on, and the monitor doesn't realize it is plugged in. But it is spotty, sometimes I can turn it on, and the monitor will work (probably well under 10% of the time). When I first plugged it all up it actually worked first try for me, so I thought he was pulling my leg or had done something dumb. But while I had it running, it seemed to run fine. I ran Prime95 and temps seemed fine I guess he never monitored them. I also installed a game, FEAR 2, ran around in the game fine. Temps looked fine too. Then I turned it off, turned it back on, and no joy.

So my first thought, check the DVI cable. I switched cables with a spare I had on hand, no joy. I even tried a VGA with a VGA > DVI adapter I had onhand. Then I thought to see if video card is running, it was. It seemed to be mounted well PCI-E power cable plugged in securely.

Well my next step was to plug the monitor into my working computer, monitor worked fine on my end. I then tried a couple of my monitors on it, a CRT via VGA and an LCD via DVI. No joy.

So then, I thought I would take out the video card and put in a spare I had. Note that the original card in was a 9600GT, and the replacement card was a 9800GTX. No joy.

So I was wondering what you would think the problem would be. Motherboard? PSU? I told him to bring it to me, to save him a yearly salary from taking it to Best Buy, but this has me stumped.
 
Wow, can't believe I forgot that.

OCZ GameXStream 700W
ASUS P5K SE EPU LGA 775 Intel P35
C2D 8400
4GB DDR 2 800
Originally there was a EVGA 9600GT
My card was a 9800GTX, which I know works as I just recently upgraded from it.
Windows XP (Pro I believe not 100% on this)
2 Samsung SATA
WD 640gb SATA drive
Dell monitor 19" maybe (has both VGA and DVI inputs)
 
Which is the primary HD? Try unplugging the other two and see if the symptoms go away.
 
The last time I saw such a problem, the case was shorting out the system. So reassemble the PC outside of the case. Leave the motherboard on the motherboard's box. Jump the two power pins with a screwdriver on the motherboard to start the PC. If you get video now, something inside the case was shorting out the motherboard. Look for any loose screws, wires, cables, standoffs, washers, etc.
 
Which is the primary HD? Try unplugging the other two and see if the symptoms go away.

haha Sorry the Samsungs are DVD drives, only one HD, the WD 640. I have unplugged both of the DVD drives, even though there isn't a disc in either. I pulled the hard drive, it seemed fine, I plugged it into my external, and also plugged it internally to my computer. I didn't really do anything with it, copied a folder with about 1gb of music in it to and from it. But I could access it, and no bad noise from what I could tell.

I will try taking it out of the case. Thanks for the help
 
Do you have a spare Power Supply?

Well I have one in my system, but I am not gutting my system to test. It took me a while to clean up the wires and the CPU power cable is in a really awkward spot. It is pretty much under my heatsink and in a tough spot to get to with the mobo in the case. I am far too lazy to do that for someone else hehe.

Hopefully I will have time take the broken one apart tomorrow.
 
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