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Windows 7: PC Powers on, then off, then comes on normally

06 Jun 2016   #1
muldy29

Windows 10 Home x64
 
 
PC Powers on, then off, then comes on normally

Ok, for a week now, my PC will power on when I press the button, boot normally for a few seconds, then it just loses all power.
If I press the power button again, it boots perfectly fine.
I thought it could be the switch on the case, so have bought a new case and installed it, making sure all the connections are tight. For a while (2 turn ons) it was fine and I thought it was fixed, today I have gone to turn it on and it has done the same.
Is my PSU dying?
or could it be something else?


My System SpecsSystem Spec
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06 Jun 2016   #2
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot
 
 

I think that it might likely be your PSU. DO you have another that you could use to test the theory? Even one from a friend temporarily. It's better than buying a new supply and finding out that isn't the issue. But from what you're describing, it sounds like a PSU issue.
My System SpecsSystem Spec
07 Jun 2016   #3
muldy29

Windows 10 Home x64
 
 

could this also describe why my monitor flickers every so often when using split screen view or just watching Youtube in general, but in games at full screen, it runs fine?
My System SpecsSystem Spec
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08 Jun 2016   #4
muldy29

Windows 10 Home x64
 
 

It's not the PSU, nor is it the power lead, as i am now using the new one that came with the PSU in a different plug socket, so its not that, Think I am going to have to live with it
My System SpecsSystem Spec
09 Jun 2016   #5
GEWB

Linux (Mint is primary) / XP, Win7 Home / Win7 Pro, Ultimate / Win8.1 / Win10 archived VM
 
 

  1. Go into the BIOS setup.
  2. Under Power Management set the Power Loading to ENABLED.
  3. Save & Exit the BIOS setup.

Let us know what happens.

Regards,
GEWB
My System SpecsSystem Spec
09 Jun 2016   #6
muldy29

Windows 10 Home x64
 
 

for the moment, it seems to have fixed it, will check again later and tomorrow, but hopefully
My System SpecsSystem Spec
09 Jun 2016   #7
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Exactly what power supply are you using.
Post a site if possible.
My System SpecsSystem Spec
09 Jun 2016   #8
muldy29

Windows 10 Home x64
 
 

My System SpecsSystem Spec
09 Jun 2016   #9
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

The reason I asked is because some newer power supplies have a pre-check if the power to the power supply has been removed.

Example:
If you turn the wall outlet power off to the power supply and then turn it back on, the power supply will do a pre-check.
This pre-check will start the power supply and then stop and restart if everything is okay.
If you leave the power (wall socket) to the power supply on it will not do this stop and start thing.

My AX860i will act this way. Your millage may vary.
My System SpecsSystem Spec
10 Jun 2016   #10
muldy29

Windows 10 Home x64
 
 

It is left on permanently at the wall.
Turning my pc on this morning it did the same thing as before, on, off then powered on.
Just now after work, it came straight on, so will keep an eye for a day or 2
My System SpecsSystem Spec
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 PC Powers on, then off, then comes on normally




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