Laptop Sudden Power Off Issue

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Bradbury Keller

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Apr 20, 2013
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I am having trouble with my Sony Vaio laptop, it will crash if I boot into the bios and attempt to make changes to settings, if I boot off a cd (linux) and run a program that tests CPU stability, and it crashes in windows once a load is put on the processor. However, if I boot into safe mode the computer is stable no matter what I do.
Any suggestions would be great, the only things I could think of were a CPU problem (safe mode stability crosses that out), and a virus of some sort, but Malwarebytes, and numerous other virus programs have yet to find anything.

Thanks
 
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dodger46

dodger46

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Nov 19, 2011
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Possibly a bad RAM stick, if you have 2 try running with one removed at a time. (Or run Memtest 86 from bootable didk/USB device)Perhaps Safe mode utilises memory addresses that are not corrupt...
 
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ratedk

ratedk

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Mar 31, 2011
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I've seen similar issues before with overheating as well. Safe mode doesn't tax the GPU at all. Easy way to check is to find the fans exhaust and blow into it like a harmonica. If the cooling fins on the heatsink are dirty, you'll see the dust ball come out.
 
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Bradbury Keller

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Apr 20, 2013
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The RAM Sticks are good, and the fan and heat sink are spotless (Temp apprcx 50C). A test with a dump file program says there is a power problem relating to ntoskrnl.exe. I cannot provide any more information than that because the hard disk just deleted the partitions while trying to do a system restore with a sony restore application, but if you have any idea why the problem occured that would be great.

I am going to install windows again and hope that fixes the issue...
:/

Thanks
 
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Bradbury Keller

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Apr 20, 2013
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It seems to have stopped crashing in the Bios for the most part, but the re installation didn't fix anything (still sudden loss of power randomly). I assume it is a hardware fault of some sort either in the processor or motherboard (no other significant parts that seem to be an issue) but I have no idea how to test it.
 
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dodger46

dodger46

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Nov 19, 2011
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'Sudden loss of power'? Do you mean the machine actually shuts down completely, or freezes? If loss of power, check temperatures
Speccy
http://download.cnet.com/Speccy/3000-2094_4-75181811.html
and if it doesn't show GPU get GPU-Z
http://www.techpowerup.com/gpuz/
Hope it stays on long enough to download!
Does the fan appear to function normally?
Have you had the machine long enough for dust to build up in fan outlet?
 
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Bradbury Keller

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Apr 20, 2013
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It turns off completely without a visible BSOD, and the temps are only about 48-50C for the CPU (fan is fine). I will check the GPU temperature today and see if that is an issue..

Thanks
 
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