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: Computer Randomly Instantly Restarts - No bluescreen

16 Apr 2014   #11
GHR

Windows 7 X64 Home Premium
 
 

My first thought is a bad power supply. Check the voltages in the BIOS if you can.
If they're under the nominal by more than 10-15% I would change out the PS.

Even without bad voltages you could have a sudden power drop which would cause the system to reboot or become unstable.

Also, could try Stress Linux. Linux distro for testing systems under heavy load.
Worth a shot and might be revealing. Google for latest version.


My System SpecsSystem Spec
.
23 Apr 2014   #12
SirQuackworth

Windows 7 Professional 64bit
 
 

Disabled auto restart on failure, crash happened, no log or BSOD.

Will try stress test Linux
My System SpecsSystem Spec
23 Apr 2014   #13
andrew129260

Windows 10 Pro
 
 

I almost want to say with 100% certainty its the PSU, do you have another psu to test with?

Install any new hardware recently?
My System SpecsSystem Spec
.

23 Apr 2014   #14
GHR

Windows 7 X64 Home Premium
 
 

Quote   Quote: Originally Posted by andrew129260 View Post
I almost want to say with 100% certainty its the PSU, do you have another psu to test with?

Install any new hardware recently?
I certainly sounds like that to me.
I told the OP to try stress Linux. Think that will help him ID the PS as cause?
My System SpecsSystem Spec
23 Apr 2014   #15
Golden
Microsoft MVP

Windows 7 Ult. x64
 
 

My System SpecsSystem Spec
23 Apr 2014   #16
andrew129260

Windows 10 Pro
 
 

Stress testing most defiantly can help with that. However if a stress test is put on a bad psu, that might cause bad things to happen. Especially with a very weak (not high quality) psu. I'm not saying his is. But in most circumstances the psu will save itself. Ether way we will figure out the culprit, but I think a different psu test should have been done first. But that is my own opinion. (Yours is still a very good suggestion) Different methods. For stress testing I would use prime95. But based on his problem your method for stress testing is better then prime 95.
My System SpecsSystem Spec
24 Apr 2014   #17
GHR

Windows 7 X64 Home Premium
 
 

I've seen some really under powered PS in computers. Some are ridiculously under powered too.

I have a neighbor who bought one of the eMachines budget line with AMD Sempron CPU (socket 939 I think).
They're not computer savvy and probably got it for Xmas or Black Friday.

Probably 3 years ago now. They asked me to have a look when it wouldn't power on.
One of the caps was charred. It was only a 275W though.
I put in a 350W I had laying around and it killed that one too within a few days.
I finally got them to buy a 500W for about $40 and that PC has been fine ever since.
Has Vista Basic(!), but hardware will likely last a while more.

They had no symptoms of failing PS though. It just died.
Might have been a power surge though. The caps were really charred.
My System SpecsSystem Spec
24 Apr 2014   #18
madcratebuilder

Win8/8.1,Win7-U64, Vista U64, uncounted Linux distor's
 
 

Check all ATX power connections on the MB and PSU. I've seen similar issues that traced back to a bad cable/connector.
My System SpecsSystem Spec
24 Apr 2014   #19
SirQuackworth

Windows 7 Professional 64bit
 
 

The PSU is a BeQuiet Straightpower L8 730w (too big yes but it was 60).

I myself am pretty sure it's the PSU.
My System SpecsSystem Spec
24 Apr 2014   #20
GHR

Windows 7 X64 Home Premium
 
 

Quote   Quote: Originally Posted by SirQuackworth View Post
The PSU is a BeQuiet Straightpower L8 730w (too big yes but it was 60).

I myself am pretty sure it's the PSU.
Your PSU might not be bad, but the 12V supply rails are underpowered. The specs show 12V@30A x2 So 60A combined, but I think that might be the problem. 30A on one supply rail might not be enough to keep a system happy under heavy load.

Get a PSU with one 12V supply in the >40A or 50A on one circuit. Split rails might not be as good.

Mine is a seasonic ss-650km. Cost was $100. I'm not sure if you can get one in UK but it has 54A all on one rail and can handle a Haswell or so the box says.
My System SpecsSystem Spec
Reply

 Computer Randomly Instantly Restarts - No bluescreen




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
Computer randomly freezes, then restarts
At random times throughout the day, my computer will freeze, then restart after 3-4 seconds. I do not get a BSOD, so I do not know what is causing it. In Event Viewer, in the System list, there is an Error with the details: - System - Provider Name] EventLog ...
General Discussion
Computer randomly restarts (sometimes crash) while using.
Hi, I'm kind of a newbie to all this computer stuff but I know some basics of computers. A few months back, my computer won't boot at all, and I had to reformat all of my partitions and do a complete reinstall. After that, my computer keep restarting by itself and sometimes give me the BSoD...
General Discussion
BSOD randomly computer restarts
My Compaq Presario GQ60 started BSODing out of nowhere on the 22 Ive tried just about everything
BSOD Help and Support
My computer restarts randomly
My computer has been restarting randomly for the past few days and it's driving me crazy since I'm a student and I really need my computer to do all of my homeworks:cry:. After the last unplanned restart, I went to event viewer--windows logs--system, and it appears that the restart was because of:...
BSOD Help and Support
Computer restarts almost instantly in some games
I have a problem i noticed i have for about 3-4 days My computer restarts every some minutes when im browsing in Mozilla Firefox(but not in Internet explorer) And when i try to play in BFBC2 , my computer restarts before i even manage to get into a server Or , when i try to play Red Faction...
BSOD Help and Support
I Need Help. Computer randomly restarts after BSOD
My computer randomly restarts after very quickly displaying this Error Message, I have no idea what's causing it.. I have windows 7 (64x) on an HP Laptop Problem signature: Problem Event Name: BlueScreen OS Version: 6.1.7600.2.0.0.768.3 Locale ID: 1033 Additional information about the...
BSOD Help and Support


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 07:31.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App