Build Problem - PSU or GPU??

alwayssideways

Hi Guys, In need of your wisdom once more! (My build details are below)

Symptoms

1. Dreaded blue screen of death a few days ago (error dxgmms1.sys - relates to GPU driver) *Note - this only happened once
2. Since then my machine boots up fine but suddenly losses all power (this may happen 1-10 minutes after windows loads)
3. After loss of power machine automatically tries to reboot - I can't see the BIOS screen and after 10(ish) seconds it turns off, it repeats this process of trying to reboot indefinitely.
4. To stop it rebooting indefinitely I switch it off at the button - I leave the machine for an hour and start it up again - it will then repeat symptom 2 & 3 above

My attempts at fixing the problem

1. Output from on board graphics to see if problem persists - Problem does NOT re-appear
2. updated GPU drivers and then move back to using the GPU...Problem reappears

I was thinking that if the PSU is on the blink it may be it causing the problem? (I don't have a spare PSU to test so i want to make sure before I splash out on new hardware that I may not need) Or maybe I'm overlooking something?



Build
Processor - Intel Core i5 3570K |
CPU Fan - Be quiet! Shadow Rock TOPFLOW SR1|
MotherBoard - ASRock Z77 Pro3 |
RAM - 2 X G.Skill NT Series memory - 8 GB|
Case - Corsair Obsidian Series 550D|
Graphics Card - Sapphire RADEON HD 7950|
PSU -Be quiet! Pure Power BQT L7-630W|
SSD - Samsung 830 Series 256gb|
HDD - WD Caviar Green 2TB Sata 6Gb/s|
DVD Drive - LG GH24NS70 Super Multi - DVD±RW|

Xenoronin

Have you tried reseating the graphics card?
Is there another power connector you could try plugging into the gfx card? Maybe check your box of bits for a connector converter from molex to 6pin. (bit of digging suggests that the adapter takes 2 molex (4pin in a line) to convert to the 6pin)
Like this:


Try putting the gfx card in the 1 x PCIe 2.0 x16 slot?

I'm no expert but hopefully it helps somewhat.

alwayssideways

Xenoronin wrote: »

Have you tried reseating the graphics card?
Is there another power connector you could try plugging into the gfx card? Maybe check your box of bits for a connector converter from molex to 6pin. (bit of digging suggests that the adapter takes 2 molex (4pin in a line) to convert to the 6pin)
Like this:
http://www.evga.com/support/faq/files/pcie%20pwr%20adapter.jpg

Try putting the gfx card in the 1 x PCIe 2.0 x16 slot?

I'm no expert but hopefully it helps somewhat.

Thanks for you suggestions, I haven't tried re-seating the graphics card as it had been working flawlessly up until this point, but I will give all your suggestions a go and report back.

Xenoronin

Other solutions I've come across.
Try with only one stick of ram and swap, checking each.
Insert your windows 7/8 disk and run repair.
Make sure all your connections are in correctly.
Try resetting the bios by removing the CMOS battery or using the switch if there is one.
Try disabling onboard graphics in the bios menu.
Check the motherboard to see if there is any damaged or disfigured capacitors.

btkm8unsl0w5r4

Sound very much like a PSU issue, are you overclocking at all?

game4it70

Also check the gpu fan is spining just on the off chance its over-heating.

marco_polo

With a boot loop you can't really rule out much initially including the motherboard itself, and shorting/static buildup by the case.

I would do everything that Xenoronin except I would go further and suggest breadboarding as well (remove it from the case entirely and boot with just the motherboard and minimal amount of components on an insulated surface)

alwayssideways

Melanie Delicious Gynecology wrote: »

Sound very much like a PSU issue, are you overclocking at all?

Not overclocking

game4it70 wrote: »

Also check the gpu fan is spining just on the off chance its over-heating.

GPU fans are spinning fine. Monitored temps and they are fine.

marco_polo wrote: »

With a boot loop you can't really rule out much initially including the motherboard itself, and shorting/static buildup by the case.

I would do everything that Xenoronin except I would go further and suggest breadboarding as well (remove it from the case entirely and boot with just the motherboard and minimal amount of components on an insulated surface)

I will try each of the suggestions above, thanks.

alwayssideways

Ok folks, quick update...came home from work...turned the machine on and it's been working perfectly so far, it has been on the last hour or more. These intermitent problems are so annoying!

spix

Do you have sleep enabled? Do you have samsung ssd magician installed?

sulc84

I had problems with windows 8 ..lot of crash.. Back to windows 7