Computer shuts down but won't power off

penguintwitch

Distinguished
Apr 28, 2008
3
0
18,510
Hey guys, sorry if this is the wrong section to post this in.

About three months ago I built a new computer which has been running fine, haven't had any issues with it at all until last night. When I try to shut the computer down it will shut down, screen turns off and what not but the power stays powered on, the fans and led's all stay on and won't shut off unless I switch off the power at the power supply. I have tried booting into safe mode and shutting it down and trying to hold the power button down to shut it down, both of those end up in the same result. When it does shut down the fans and led's seem to go to about half power as in they spin half as fast and half as bright. If I press the power button while it's like this the computer just boots back up as normal

The computer however doesn't always seem to do it, maybe 1 out of 10 shutdowns at the moment it will shut down correctly. All drivers are up to date and so is the BIOS, nothing has changed recently hardware or software wise that should affect it like this however I did try system restoring it back a few days and uninstalling anything I installed recently which was just games. I also took the computer apart and checked all the connections for components and power connectors.

Any help would be greatly appreciated :) I looked around in a bunch of places and everything I have tried hasn't seemed to help much.

The specs on the the computer are:
Windows 7 64-Bit Ultimate
Silverstone Strider Plus 600W ST60F-PS Power Supply
ASRock Z87-PRO4 Motherboard
Intel Core i5 4670K (Not overclocked)
G.Skill Ripjaws F3-12800CL9D-8GBRL 16GB (4X4) RAM
Crucial M500 120GB SSD
Asus Nvidia GTX 660 Graphics
 
Solution
I would still apply thermal paste to your cpu, one of my systems is using the Corsair H60 2013 model as well. It helps to make the cpu last longer and cooler.

Th voltages are standard for your setup and shouldn't cause any issues what so ever. Also the temperatures are fine according to this guide

http://www.tomshardware.co.uk/forum/id-1800828/intel-temperature-guide.html

From what i know its most likely a PSU fault and when it comes to them you NEVER open them up or try to fix them without having the proper training to do so (You dealing with 240v)

On the other hand your button its self or the button's motherboard matrix could be faulty but its unlikely.

So check with your PSU manufacturer's warranty and see if you can get a...

lewisg743

Honorable
Dec 14, 2013
139
0
10,710
Check your CPU temps, also did you apply thermal paste when you installed the CPU ?

Check your BIOS settings under power management and make sure that there is a target for CPU fan.

Use HW to check that all voltages are close to what they should be (remember to have a +1V and -1 tolerance meaning a 12V connection can use 11 or 13 as well)
http://openhardwaremonitor.org/
 

penguintwitch

Distinguished
Apr 28, 2008
3
0
18,510
Thanks for the reply :)

I ran the Aida 64 Stability test quickly and a small 5 minute run of BF4 to check temps and voltages. The temperatures on the CPU sit at around 50 degrees C and Spike up to between 60 and 65 for a second before going back down. For thermal paste I didn't apply any on my own however the CPU cooler I am using (Corsair H60 SE) had thermal paste already applied to it and I just stuck with that for now.

Not too knowledgeable on voltages but normally they sit between 0.8 and 1.05v on the vcore depending on load, usually just jumps between those.

The BIOS detects a CPU fan and it's speed is just set to auto at the moment.

Here is a screenshot of OHM after the tests I did if that helps :)

https://imagizer.imageshack.us/v2/357x816q90/844/7h8h.png

 

lewisg743

Honorable
Dec 14, 2013
139
0
10,710
I would still apply thermal paste to your cpu, one of my systems is using the Corsair H60 2013 model as well. It helps to make the cpu last longer and cooler.

Th voltages are standard for your setup and shouldn't cause any issues what so ever. Also the temperatures are fine according to this guide

http://www.tomshardware.co.uk/forum/id-1800828/intel-temperature-guide.html

From what i know its most likely a PSU fault and when it comes to them you NEVER open them up or try to fix them without having the proper training to do so (You dealing with 240v)

On the other hand your button its self or the button's motherboard matrix could be faulty but its unlikely.

So check with your PSU manufacturer's warranty and see if you can get a replacement for it.
 
Solution

penguintwitch

Distinguished
Apr 28, 2008
3
0
18,510
Ok thanks!

I have a spare power supply lying around from my old build which should be able to handle this system, I'll try and see if the issue happens with that one too and I'll try another install of Windows on another hard drive. If that doesn't work I'll look into getting something replaced.

Thanks for the help! :)