Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Sudden shut off, won't turn on

25 Dec 2015   #1

Windows 7 Professional
Sudden shut off, won't turn on

While using my pc, it turned off like it was going to standby. I tried to turned it on, but no luck. My PSU will power on, but that's it. There is no indicator light on my mobo. My video card does not turn on either. However the outside power light on my tower turns on.

I had this kind of problem recently, which I posted about [here].


1) Took out there graphics card, but no start up. I can hear my HD starting up, but still no power to mobo.

2) I'm going to get ahold of a pcu to test that next. Fingers crossed.

My System SpecsSystem Spec
25 Dec 2015   #2
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot

Could be one of three things:

1. Your power supply is blown
2. Your motherboard has bit the dust
3. Your graphics card is faulty.

There are a couple of things you can do to test this out.

- remove the graphics card and see if the computer will start up. Obviously, you'll have no screen, but see if the fans spin up and the motherboard light comes on and you'll get a POST beep. If you do, replace the graphics card.

- borrow a power supply from a friend if you can and plug it in, if the computer will start up, your power supply is the culprit.

If those two don't work, it might be your mother board. Try those two things and post back, please.

(Judging by your other thread, it sounds like the power supply to me, but I'd like you to try to troubleshoot this before I make a guess like that.)
My System SpecsSystem Spec
25 Dec 2015   #3

Windows 7 Professional

I started back up, and it was perfectly fine. However I shut it off, and now there's no power again to the pc.
My System SpecsSystem Spec

25 Dec 2015   #4

Windows 7 Home Premium 32-Bit - Build 7600 SP1

Quote   Quote: Originally Posted by mmurray1988 View Post
I started back up, and it was perfectly fine. However I shut it off, and now there's no power again to the pc.
If there is no power, it sounds like you need a new Power Supply. Let it sit about a half hour and try it again. If it starts up, I would download the free and check all of your temperatures.
My System SpecsSystem Spec

 Sudden shut off, won't turn on

Thread Tools

Similar help and support threads
Thread Forum
system sudden shut down.
hi guys i just boot up my pc from hibernation and updating google chrome dev and the system just shut down and restarted could someone have a look at my dmp file please just to give advice. thanks brian.
BSOD Help and Support
Sudden shut down and Blue Screen
Hi I am running Windows7 64 bit for two years now. Since three months ago, I get a sudden windows shut down time to time and frequency increased this week, three times so far. I have not installed any new hardware or software. When I reboot, the "repair mode" does not work and I have to use...
BSOD Help and Support
New Computer sudden shut down problem
Hi there This is my first post so sorry if it is not in the right place. I have used Windows XP for about 8 years with absolutely no problems. I decided to get a new computer with Windows 7 as the old XP was getting slow. I ordered a computer from a BTO company. The specs as follows Windows...
General Discussion
BSOD Dell 5010 & Sudden Shut down..please Help!!
Hello Everyone, I have Dell N5010 with following Specs; Core i7 (740QM) 4 Gb Ram 1 Gb Ati Radeon graphic card 500Gb Hdd It came with a Preloaded Windows 7 Home Edition, but i Have upgraded it to Windows 7 Ultimate x64
BSOD Help and Support
Sudden Shut down only at Windows Seven
Hello people I have installed windows Seven along with Ubuntu 9.10 awhile ago. I had encountred several sudden shut downs during the format process while installing XP that's why i went for Seven. Whenever I'm using Win7 the computer shuts down by itself at random times. It's like i pull the...
Performance & Maintenance

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 20:46.
Twitter Facebook Google+