PSU / Mobo problem ?

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the555fallen

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The computer randomly crashes, on some occasions I get a BSOD but the BCCode varies everytime and on others the computer simply turns off. To be able to reboot the PSU switch must be turned off or power cable removed for a few seconds until the capacitors in the computer discharge (the led's in the mouse and on mobo only turn off after this happens). The computer is quite new purchased all components new 2 months ago.

I have eliminated RAM problems by running memtest on a different machine and tested fine. The mobo comes with an internal gfx card so I tested that the external gfx card wasnt the problem by swapping out. I can only think there is a problem with the capacitors or VRM in the mobo or a faulty PSU. What could be causing this?

Specs:
AMD Pheonom II x6 1055T
2 x 2Gb Kingston HyperX Blu 1600MHz DDR3 RAM
Corsair HX 650W PSU
XFX NVIDIA GeForce GTS 250 512Mb
ASUS M4A88TD-M/USB3 Mobo
1 Tb Seagate HDD
 
make sure all the cables are securely slotted in to all parts.
What fans do you use in the PC?
Have you tried exchanging the physical PSU cable leading to the plug point?
What chassis do you have?
Is the CPU & fan securely seated?

Your caps should be solid caps making it a very slim chance that they would be swollen.

Have you over-clocked anything?
Have you updated the BIOS?
 
Test the RAM on your PC too, because it can very well be a timing issue with your RAM.
Ensure that your BIOS is up to date - like Venomous said.

Try to get hold of the BC Code, because that can indicate where the problem lies.
If the BSOD restarts your PC, then you can disable the restarting by going to System Properties -> Advanced -> Startup and Recovery, and then untick 'Automatically restart' < instructions for Windows 7.

I would also suggest that you go into the BIOS and try to disable all the power saving options. I don't know what they're called on AMD, but on Intel stuff it's EIST (Enhanced Intel Speed Step) and Turbo.
Once in Windows, see what the CPU voltage is with CPU-z, and then you can lock that voltage in your BIOS, but I would suggest that you use a slightly higher value though < I won't recommend this if you're not familiar with overclocking and adjusting your CPU voltage.

If you're still experiencing problems, borrow a PSU.
 
Venomous said:
make sure all the cables are securely slotted in to all parts.
What fans do you use in the PC?
Have you tried exchanging the physical PSU cable leading to the plug point?
What chassis do you have?
Is the CPU & fan securely seated?

Your caps should be solid caps making it a very slim chance that they would be swollen.

Have you over-clocked anything?
Have you updated the BIOS?
Click to expand...

All cables are firmly secured, have tried several PSU cables and plug sockets, have a Lian-Li A06F which comes with 120mm and 140mm fans, CPU is also firmly secured. I have OCed a bit nothing serious but even if I use default clocks the same happens. Trying a bios update now.

Pada said:
Test the RAM on your PC too, because it can very well be a timing issue with your RAM.
Ensure that your BIOS is up to date - like Venomous said.

Try to get hold of the BC Code, because that can indicate where the problem lies.
If the BSOD restarts your PC, then you can disable the restarting by going to System Properties -> Advanced -> Startup and Recovery, and then untick 'Automatically restart' < instructions for Windows 7.

I would also suggest that you go into the BIOS and try to disable all the power saving options. I don't know what they're called on AMD, but on Intel stuff it's EIST (Enhanced Intel Speed Step) and Turbo.
Once in Windows, see what the CPU voltage is with CPU-z, and then you can lock that voltage in your BIOS, but I would suggest that you use a slightly higher value though < I won't recommend this if you're not familiar with overclocking and adjusting your CPU voltage.

If you're still experiencing problems, borrow a PSU.
Click to expand...

Tested the RAM on my machine as well and was fine, I use BlueScreenView to see all my BSOD details and every time the error varies, I have tried with power saving disabled and same happens. I will try setting the cpu voltage from cpu-z (1.55V), I have an old 450W generic PSU that I will try.

Thanks for help.
 
PSU was the problem swapped it out and ran a CPU stability test, played intensive games and all good :)

Thanks
 
Back to bad new :( Sent the PSU back to the supplier (eventually) and they said there is no fault with it. I am currently running another PSU and there has been no cut outs. The RAM has been tested leaving only the mobo or CPU. The mobo has anti-surge protection and would sometimes at startup give an error that the PSU is unstable, on occasions the 3rd core of the 6 core AMD Phenom II 1055 would get disabled (all 6 cores are usually enabled). What could be the problem, assuming the supplier is right?
 
the555fallen said:
How so? I have tested other PSU's in my comp if thats what you mean. I will try another computer as well.
Click to expand...

Sorry I meant in another PC, testing the HX in another PC like the suppliers are doing or using a PSU testing device. Often these cannot pick up errors.

At times there are cases when a certain CPU/mobo/memory/PSU combo simply will not work. But that's usually the case from the start...
 
the555fallen said:
Back to bad new :( Sent the PSU back to the supplier (eventually) and they said there is no fault with it. I am currently running another PSU and there has been no cut outs. The RAM has been tested leaving only the mobo or CPU. The mobo has anti-surge protection and would sometimes at startup give an error that the PSU is unstable, on occasions the 3rd core of the 6 core AMD Phenom II 1055 would get disabled (all 6 cores are usually enabled). What could be the problem, assuming the supplier is right?
Click to expand...


had a similar issue with my ocz gamerextreme psu. sent back to supplier and asked to test using a similar high load gfx card to my machine and only then was problem replicated. when supplier tested with on board graphics everything was fine. This scenario was replayed when supplier sent back to agent and techie from the supplier had to explain how to replicate problem before they agreed to a swop out.
 
I have a GTS 250 512Mb XFX i dont think that classifies as "high load" does it? Is this problem definitley a PSU problem even?
 
the555fallen said:
I have a GTS 250 512Mb XFX i dont think that classifies as "high load" does it? Is this problem definitley a PSU problem even?
Click to expand...

i meant my card was high load : ati 6950 2g.

but yours isn't although when you tried another psu, it worked fine? i sort of lost you there in your subsequent explanation.
 
I'll rephrase the qu bit better, is it possible that the supplier got it wrong then?
 
How could I test it? Just run it on my computer again, when I get it back, and if it crashes ask them to do what?
 
Ok thanks will do. Is it possible that the mobo or CPU is busted?

AMD Phenom II X6 1055
M4A88TD-M/USB3
 
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