Solved My Monitor will randomly shut off -cannot find signal-

September 29, 2014 at 08:26:52
Specs: Windows 8.1
My Monitor will randomly shut off, saying that it can't find a signal. I've built several computers and this problem has stumped me. NOTE: I just placed my processor from a intel dou 3.0 ghz, to a intel 2 quad 2.4ghz. My computer will continue to run, as well as my keyboard, and mouse. The CPU light will shut off, along with the monitor. Can't do anything besides shut off the PC really.

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#1
September 29, 2014 at 08:27:16
Operating System
Windows 8.1 Pro with Media Center 64-bit
CPU
Intel Core 2 Quad Q6600 @ 2.40GHz 33 °C
Kentsfield 65nm Technology
RAM
4.00GB Dual-Channel DDR3 @ 532MHz (8-8-8-20)
Motherboard
Gigabyte Technology Co., Ltd. G41MT-S2PT (Socket 775) 25 °C
Graphics
DELL S1709W (1440x900@60Hz)
1024MB ATI AMD Radeon HD 6670 (MSI) 36 °C
Storage
698GB Seagate ST3750528AS ATA Device (SATA) 30 °C
Optical Drives
Optiarc DVD+-RW AD-7200S ATA Device
Audio
Logitech G430 Gaming Headset

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#2
September 29, 2014 at 08:29:54
My CPU isn't overheating. It hasn't went over 51C, even with playing extremely high CPU intensive games like Battlefield 4. The times of which the monitor shuts off is strange. It'll happen randomly, maybe once every 2-5 hours, than again after 20-30 minutes of restarting. I've tried unplugging, and plugging everything back in. I also downloaded chipset drivers. Not sure if that would cause the problem. Quick response please. :D

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#3
September 29, 2014 at 09:54:12
✔ Best Answer
Did this fault come along immediately after you worked on it?

Otherwise Video Card or monitor connections are high on the list of possibilities.
If you have an addon Video Card try cleaning its edge connectors with a pencil eraser then popping the card in and out a few times to clean any oxide off the socket.

Always pop back and let us know the outcome - thanks


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Related Solutions

#4
September 29, 2014 at 11:10:07
I have my video card unplugged right now, and my computer is actually working. I'm running off of onboard graphics right now. So i guess it was my graphics card? Is my card broke, or do you think it's a more simple fix? Are there any ways to test my card.

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#5
September 29, 2014 at 11:22:02
Hi Elit, a couple of thoughts.

can you position the graphics card, such that it is better cooled?
Also blow out its fan, if present.

If fault returns (maybe when graphics card re-instated), try another monitor.

Good Luck - Keep us posted.


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#6
September 29, 2014 at 11:41:12
I've already tried a different monitor previously, however I'll let you know after i'm done reinstlaling my graphic card drivers, cleaning it, etc. Hopefully we can get this resolved for someone experiencing similar issues. :)

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#7
September 29, 2014 at 12:15:43
So, apparently it was my graphics card causing the problem. The thing I still don't understand is, this problem didn't occur until I installed my new quad core.

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#8
September 29, 2014 at 12:56:04
Coincidences can happen but did you clean the edge connectors etc as per #3 because they often show up when a computer has been disturbed? If there is oxide about a minor vibration can move them onto a bad bit (even though they look quite good).

Always pop back and let us know the outcome - thanks


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#9
September 29, 2014 at 13:51:05
Is your power supply adequate? The make/model/wattage etc is mysteriously absent from your spec list.

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#10
September 29, 2014 at 19:50:48
It's an older 500W Power Supply. Don't know the exact brand.

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#11
September 30, 2014 at 05:36:07
The HD 6670 isn't a high wattage card, but if your PSU is outdated & doesn't have the amperage distributed correctly for a modern system, the addition of the video card may be enough to exceed its capacity.

message edited by riider


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#12
October 2, 2014 at 14:27:00
I see you've marked a Best Answer. Does this mean it is fixed now?

Always pop back and let us know the outcome - thanks

message edited by Derek


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