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Internal Power Error, no AMD processes and after some time

Hi!
I am really really messed up.
On my working station:
AMD Phenom X4 925
AMD 780 mobo
Gtx 760 Ti
Now what is the problem?
After a while, especially doing just nothing, I get the BSOD Internal Power Error.
I just do not have any clue why.
I tried to put the pc in power setting in different settings. Or I changed the screen off time and sleep time off (that improved the time I got).

Anyone a clue?
I would be so greatfull.

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Not yet.
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Changed power supply

Hi!
So what I tried is changing my power supply.
I had a spar one (brand new lying around) 460W of output, I guessed that would be enough (stock one was 400W). So just to rule this source out, is 460W enough?
What I found out that it does not happen regurarly, it comes and goes espiacially after doing nothing. Now with the new power supply it is much better but I keep getting the BSOD from time to time but just 3x less frequent. How does this happen? I mean after the new PS in it it should be gone or should have stayed the same no?

I am really messed up with this problem..

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It's not just Watts. What about Amperes?

And for some models we have to check if the PSU is from a time before they were rated for today's gear.

Example, a nice enough machine with a 750 Watt PSU that would be enough but the +12V rail is not a single but 4. So the +12V is one quarter the capacity and not one rail was sufficient for their GPU. It would crash during any GPU strain.

That's why when talking PSUs folk must supply full make/model numbers or details about the rails. I like the make, model or even the link to the model's web page so I can check it out.

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LC-450 GreenPower ir is
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See the split rail?

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