Why wont my computer restart

October 13, 2014 at 21:45:06
Specs: windows 7
Recently put together a pc.

Boot up the pc for first time everything is okay.

Install drivers. And attempt to restart.

Computer monitor stays black.

Monitor will only turn on after turning pc off completely and on again. I have tried plugging the vga directly to mobo and gpu. Same issue.

What can I do?

See More: Why wont my computer restart

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October 13, 2014 at 23:17:20
Nothing at all shows on the screen--not even the logo or posting images?

I don't know--maybe a power management thing? Some basic info here:


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October 14, 2014 at 07:13:34
Are you an experienced builder? Did you bench test the hardware before installing it in the case? Please list your complete specs in as much detail as possible & explain your assembly process.

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October 14, 2014 at 18:52:05
Did you properly apply thermal compound? Look:

Bench Test basics:

In order for us to really help you, you need to list all of your components (make and model numbers included, plus wattage and individual amperages on power supply also)

You have to be a little bit crazy to keep you from going insane.

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Related Solutions

October 15, 2014 at 19:37:26
As soon as I restart my computer, everything turns on (except 1 fan that needs to be pushed before it can fully start). However the monitor remains black (blinking light in the bottom right corner).

As far as part selection goes:

AMD FX 6300 Black Edition 3.5GHz Six-Core Socket AM3+ Boxed Processor

ASRock 960GM/U3S3 FX Socket AM3+ mATX AMD Motherboard

Crucial Ballistix Sport 8GB DDR3-1600 (PC3-12800) CL9 Dual Channel Desktop Memory Kit (Two 4GB Memory Modules)

Cooler Master MegaFlow 200mm Blue LED Case Fan

WD Desktop Mainstream 1TB 7,200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive WDBH2D0010HNC-NRSN

Kingston SSDNow V300 120GB SATA 6.0Gb/s Internal Solid State Drive (SSD) with SandForce 2281 Controller

EVGA GeForce GTX 660 Superclocked 2048MB GDDR5 PCIe 3.0 x16 Video Card

Corsair CX Series CX750M 750 Watt ATX Modular Power Supply

BitFenix Prodigy M mATX Case - Black

Like I said before the computer can boot up, but unable to restart. One of the fans wont run unaided. Also all parts are new in box but upon startup I get a message that says "CMOS battery low". I think its causing my computer to properly track the date and time.

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October 15, 2014 at 19:59:57
I don't think it's the cmos battery that's causing the problems but it's easy enough to fix. On the motherboard it's the silvery--looking thing about the size of a nickel. You can get a new one just about anywhere for a few dollars.

After replacing it, start up the computer. You can set the date and time in bios setup or in windows itself. If the battery is bad replacing it will keep the bios settings. Then I think you should check the power management settings as I mentioned in my # 1 above.

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October 15, 2014 at 20:15:00
Boot into BIOS, check all basic settings for CPU, RAM, GPU/PCIe16X, etc. Check all internal temps in BIOS, if not sure of if appropriate, post all numbers to verify with us.

You have to be a little bit crazy to keep you from going insane.

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October 15, 2014 at 22:23:12
It just shut off again while playing Hearthstone. This time I was able to see that it lost power going to it for a few seconds (via a light on my headset that turned off for a brief second). It's connected to a front USB panel. I don't think the computer shutting down do to being to hot would turn that off http://www.vcefile.com,as that light stays on when I power the computer off manually. Could the power Cable be the cause of this whole ting? I could and did turn the computer right back on after that light went back on.

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October 15, 2014 at 23:12:33
So now it's shutting off during a windows session? That might be a separate issue. But yeah, if you think the power cable is loose or got jostled while the computer was on that would cause an immediate power loss

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October 17, 2014 at 12:55:19
Ignore edward745, I think he posted here by accident. I only have issues with the restart. I am heading back to micro center today to see what we can fix.

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October 17, 2014 at 15:07:43
You say this happens after you install drivers?

I would be looking in this direction for resolution. My guess this that there is a driver conflict somewhere.

Have you tried uninstalling or rolling back the graphics drivers and running the pc for a period without them to see if the problem recurs?

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October 17, 2014 at 17:33:20
Oh, I didn't notice the different poster. According to his porfile this is the only thread he's posted to.

Just to be clear, you installed the drivers and it asked about rebooting to finish the installation. But on rebooting the screen was blank and you had to do a cold boot to get it going again?

Btk1w1 mentioned the video drivers. That might be it. I think way back in the windows 98 days I had that same problem due to nvidia drivers. I ended up having to use an older version of their drivers to make it work.

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October 20, 2014 at 20:31:28
looking back I think I did cold boot it after driver installation.. I brought my build to microcenter, and the help desk suggested it might be a mobo problem or a power supply issue. I swapped mobos today to see if we can isolate the issue but now it wont boot up at all lol.

I think Im going to head in tomorrow and go for a new power supply

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October 23, 2014 at 11:15:40
Okay so I brought the computer back to micro center, and after re-seeding the processor the computer works without a hitch. Only issue is that when I try to use an hmdi cable the computer wont properly fit the monitor screen. Works fine with dvi to vga.

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October 23, 2014 at 20:04:21
I assume you meant to say 're-seating', not 're-seeding'.
I have not used HDMI yet for computer monitors but it sounds like simply a driver issue or more likely, a video setting issue for the monitor.

You have to be a little bit crazy to keep you from going insane.

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