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I turned on my computer this morning and after 15 minutes of browsing the internet my monitor went black with the message "no signal." I hit the reset button on my tower and the signal came back and everything seemed fine, but after another 15-20 minutes the monitor went black again. Forcing another restart would bring the signal back but the monitor would still go black after a while and this cycle has been going on for a few hours now.
I have turned off all the power saving options in the control panel and BIOS.
My computer is pretty dang old. Here are the specs:
Motherboard: ASUS P5B Socket T (LGA 775) Intel P965 Express ATX Intel Motherboard
CPU: Intel Core 2 Duo E6400
RAM: CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 675 (PC2 5400)
Hard Drive: Seagate 320gb SATA2 7200.10RPM PRT
Video Card: eVGA GeForce 7900GS 256MB 256-bit GDDR3 PCI Express x16
PSU: Antec SmartPower 2.0 SP-500 ATX12V 500W
Monitor: Hanns·G HW-192DJB Gloss Black 19" 5ms DVI Widescreen LCD
Any help solving this would be appreciated. Thanks.
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Sounds like your monitor has bad caps, I recently had to replace 8 caps on my monitors board. It would do the same thing. I ended up fixing it and giving it to my nephew, but bought a new monitor instead. If your willing to open up your monitor and check it for yourself but if its still under warranty then just send it back. If the warranty is over then open that puppy up!
Pics of what to look for.
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Might be easier to try with another monitor first if you have one or can borrow one.
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On November 18 2011 06:19 Boblhead wrote:
Sounds like your monitor has bad caps, I recently had to replace 8 caps on my monitors board. It would do the same thing. I ended up fixing it and giving it to my nephew, but bought a new monitor instead. If your willing to open up your monitor and check it for yourself but if its still under warranty then just send it back. If the warranty is over then open that puppy up!
Hmm, bulging capacitors. Is that why my monitor has been making popping sounds this past year? I was hoping it was a video card problem since that can be replaced cheaply.
On November 18 2011 16:50 nam nam wrote:
Might be easier to try with another monitor first if you have one or can borrow one.
I'm going to try borrowing a friend's monitor tonight.
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On November 19 2011 06:48 clarkkent415 wrote:
Hmm, bulging capacitors. Is that why my monitor has been making popping sounds this past year? I was hoping it was a video card problem since that can be replaced cheaply.
You just need basic soldering skills and like $10-15 depending on how many caps you need to replace, if your up for that then its the way to go. Because you can save yourself $120+
I'm no expert on caps, but the ppls @ http://badcaps.net/forum/ told me what parts I needed, and what not.
ofc this is assuming that the popping you heard from your monitor was the caps busting.
gl!
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Did you update your gpu's drivers recently ?
I had the same problem, installed the old one and everything was fine again.
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I also have the exact same issue with my Hanns-G monitor. It seems like it if it ever falls asleep, there's nothing I can do to wake it up besides restarting the computer.
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Ok, so I tested my computer with a new monitor and the problem STILL happens. Booted computer, waited 10 minutes, then I get no signal. I've tested both monitors on a different computer and they both work fine.
So what can it be if not the monitor? GPU? Motherboard?
I am getting a gpu from my friend, but I won't be able to test it until next week because of Thanksgiving.
I inspected my motherboard and saw two bulging capacitors, both of which were next to the pci-e slot. If it is the motherboard, I guess I better look up some soldering tutorials. Or start picking parts for a new computer, that'll be more fun.
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Just to clarify, is it just the monitor losing signal? Like if you have music running in the background will it will keep playing when the monitor loses it signal or does it freeze as well?
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On November 24 2011 16:45 gruff wrote:
Just to clarify, is it just the monitor losing signal? Like if you have music running in the background will it will keep playing when the monitor loses it signal or does it freeze as well?
Good question. I just tested this and audio stops at the same time the monitor loses signal. What does this mean?
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Probably that changing the monitor was a waste of time. 
If the music keeps playings it would most likely be the monitor, cable or maybe the gpu (drivers and whatnot). As it is now, with the bulging capacitors in mind, I'd say the motherboard is a likely suspect.
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Oh. Damn.
Yeah the problem seems to more and more likely be the mobo. Also, the time it takes for my monitor to go black is decreasing every time I reboot my computer. This last time it didn't even get past the windows logo. I booted in safe mode and my screen went black after 10 minutes.
Is there anyway for me to know for sure if my motherboard is the problem? I want to be sure I know what the problem is before I visit the Computer Build Resource Thread.
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As far as I know it's hard to confirm it's the motherboard for sure except by the process of elimination (changing gpu, psu, ram etc and eliminating other possible faults) or directly replacing the mobo. Or as you suggested yourself, replace the capacitors themselves (though it might be hard if you are not used to doing that).
Though if you have bulging capacitors, especially if you can confirm they are leaking, then you'd want to replace the motherboard regardless if it's the culprit of this specific problem.
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You should also check if it's an overheating problem. A stuck fan or loose heatsink may cause this, especially if the time to crash decreases after every reboot.
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I had the same problem about 6 months ago. After trouble shooting, and figuring it was the mobo, I bought a new computer. However, you should try swapping out the power supply if you can get a hold of one.
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EPT
