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My computer turns off completely when I put it into S3 sleep (like someone just pulled the plug).

Last response: in Windows 7
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February 13, 2014 12:29:35 AM

My computer turns off completely when I put it into S3 sleep (like someone just pulled the plug).

It started when I upgraded my graphics card, have tried two different graphics cards, the strange thing though is it sleeps properly with the original graphics card.

I have an Asrock 970 Extreme4 AM3+ motherboard and here are the graphics cards I have used:
1) Sapphire Radeon HD 4850 (Sleep works)
2) Sapphire Radeon HD 4750 (Sleep doesn't work). Have put it in my son's computer and sleep works on his.
3) EVGA Geforce 570 (Sleep doesn't work).

Before you ask. Yes I have properly uninstalled and removed all traces of the previous graphics card each time.

Also, my computer works fine when the graphics cards are under full load, so I'm pretty sure that the power supply isn't at fault.

I am running Windows 7 Ultimate x64

This is a very strange problem and it's really bugging me, please help!
February 13, 2014 12:44:02 AM

did you tried to upgrade your motherboard bios?
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February 13, 2014 1:00:36 AM

spigias said:
did you tried to upgrade your motherboard bios?

Yes, twice, the two latest versions.
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February 13, 2014 4:42:00 AM

Silverbladenz said:
spigias said:
did you tried to upgrade your motherboard bios?

Yes, twice, the two latest versions.


you can change the power options from bios, try that too
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Best solution

February 14, 2014 12:49:43 AM

Found the culprit, I can't believe I didn't think of it before.

It was my PCI-E DVB-T TV Tuner card, it didn't like the newer graphics cards. Took it out, no more sleep issue.

I've put an older DVB-T TV card I had lying around into one of my Legacy PCI slots and the computer is still working fine.

To any who are interested the card causing the problem is an AVerMedia H789 PCI-E Hybrid DVB-T tuner card.

Can a moderator please mark this thread as solved.
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February 17, 2014 9:28:29 AM

Silverbladenz said:
Found the culprit, I can't believe I didn't think of it before.

It was my PCI-E DVB-T TV Tuner card, it didn't like the newer graphics cards. Took it out, no more sleep issue.

I've put an older DVB-T TV card I had lying around into one of my Legacy PCI slots and the computer is still working fine.

To any who are interested the card causing the problem is an AVerMedia H789 PCI-E Hybrid DVB-T tuner card.

Can a moderator please mark this thread as solved.


good work
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!