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PC shutsdown without warning. Not Overheating

My computer keeps shutting down on its own. I put on a liquid cooling system after several heat sink and fan combos did not work and it still does it.

When I start it up, it powers up for half a sec then shuts down, then after a sec, it starts back up on its own. I thought that might mean not enough power, so I put on 100 watt larger power supply.

Any ideas?

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My plan

In reply to: PC shutsdown without warning. Not Overheating

I would take everything out of it execpt what is needed. Check everycable and switch and chip is secure. Make sure your powersupply isn't set-up for european ac. Try a different outlet. Then try booting again. If you can't even get into bios i'd look into a new motherboard. But I wouldn't rush for that one, any1 else?

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tried it

In reply to: My plan

I tried eliminating everything that I could even down to 1 stick of ram and it still shuts down below 90 degee f.

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Since you've covered the CPU and the chipset...how about the

In reply to: tried it

RAM....have you tested that with Memtest86+?

How about the CPU and RAM voltage settings ?

What are you using to validate the 90F temp reading ?

What MB, CPU, RAM and PSU are you using ?

VAPCMD

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Temp

In reply to: Since you've covered the CPU and the chipset...how about the

I am using default bios settings for everything.

The temp reading is from a coolmaster liquid cooling system and if i set the system shut down warning to above 90 it doesnt beep at me. If I set it below 90, it still doesnt beep. That makes me think its not temp problem.

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Try testing the RAM with memtest86+ and let us know

In reply to: Temp

about when the system shuts down....like does it shutdown with 15 30 or 60 minutes after bootup ? Or only after running a program or game ?

How is the chipset cooled ?

VAPCMD

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Temperature scale

In reply to: Temp

Is that setting 90

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(NT) His second reply gave F [in lower case, LOL]

In reply to: Temperature scale

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(NT) Missed it. Thanks, Ray!

In reply to: His second reply gave F [in lower case, LOL]

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How do you know that?

In reply to: PC shutsdown without warning. Not Overheating

What temperature data do you have for the CPU?

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You need a new mother broad

In reply to: PC shutsdown without warning. Not Overheating

You need a new mother broad.

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What makes you say he needs a new mobo?????????????????????

In reply to: You need a new mother broad

What brings you to that conclusion....? Could be the CPU still or many other things.....sp please share your expertise on how you reached that as a remedy.

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I agree. Now that another 9 years has passed.

In reply to: What makes you say he needs a new mobo?????????????????????

It's 90% or higher chance they are right!

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It's not overheating now.

In reply to: PC shutsdown without warning. Not Overheating

The first Pentium machine I bought suffered this problem. It would work fine, but suddenly reboot without provocation.

It was not overheating and it was not required to do anything particularly difficult. However the self-restarting problem became more and more frequent.

I suspect this problem was the reason the machine was sold.

I later learned the following theory:

The chip HAD been overheated previously, which results in an internal semi-short developing inside the chip. This apparently keeps developing to the point that eventually it keeps shorting the chip so frequenty that it can never successfully boot.

This "theory" tied in with the way my machine was behaving. I eventually replaced all of it becuase playing around with bits and pieces was getting me nowhere.

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PC shutdown

In reply to: PC shutsdown without warning. Not Overheating

Ok I'm no real expert but a friend of my ex-girlfriends had the same problem. It turned out to be a virus that was causing the problem. Of course you couldn't load anything to deal with it because the damn thing was shutting down before you could get to it. Unfortunately it came down to taking it to a shop to be repaired and I don't know the virus definition. So really take it to a shop!

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pc shut down

In reply to: PC shutsdown without warning. Not Overheating

I had a proplem like that until i changed the settings on energy properties read how to through search for energy properties.

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power supply problem

In reply to: PC shutsdown without warning. Not Overheating

This pc shutting down happened to me the it was corrected by changing the power supply

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PC shuts down- not a temp problem

In reply to: power supply problem

The first thing to check is the capasitors on the mainboard (the metal barrels about the diamater of a pencil) If any of the tops are puffed up, it the mainboard. The second thing is the RAM, then the power supply. If it may be software then disconnect your hard drive and connect another hard drive on it and install a fresh copy of windows.

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PC Shutdown

In reply to: PC shutsdown without warning. Not Overheating

I am not so techaware so I would do a restore to a previous ok time. Do it in safe mode

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ps shut down

In reply to: PC Shutdown

I,ve been repairing puter,s for some 30+ years now,,,,,,,,you have a reboot virus,,,,,seen this happen all to many times,,,,,do a complete virus scan,,,,,,(in safe mode)....

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May Be Switch

In reply to: PC shutsdown without warning. Not Overheating

Hi LoneReaper,
I also had the same problem a while back. I tried everything possible and it turned out out to be faulty on/off switch on my case. It was sometimes making contact then not. I could be lucky and pc would stay on for hours, but sometimes minutes or seconds. After weeks of trying all else, that was the problem. May be worth looking at. HTH.
Yours......Bob

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RAM

In reply to: PC shutsdown without warning. Not Overheating

I had also a problem with the PC shutting down with no apparent reason. It made me crazy for a while. The problem was a defect RAM module. Look for a small piece of software on the internet to check up your RAM, sorry but I cannot remember the name, the problem was on an old computer. I removed the defect module and everything came back to normal.
Good luck

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faced this issue year before

In reply to: PC shutsdown without warning. Not Overheating

I faced this issue year before. Firstly, you just need to make backup of your data before you lose it then take guidance of experts who can actually get you out of this mess. You have already tried much, so I suppose it’s now a time to take it to PC repair specialist.

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This old post is closing.

In reply to: PC shutsdown without warning. Not Overheating

Please start a new discussion as old posts rarely get replies.

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