New GPU. System Shutting Off

[woobm85]

Hello,

First My Specs:
HPE Pavilion h8-1220
I5-2500
Corsair HX650 PSU
8 GB of Ram
120gb SSD
1tb harddrive
Windows 8 64 bit
Mobo: Pegatron Corporation Model 2AB5

I have been having issues with my system shutting off randomly...no error screen or anything. It all started when I upgraded from a 560ti to a GTX 660. Everything seemed fine after installing the 660 (uninstalled the previous drivers before installing the 660 and installing the new drivers). Then a few hours after install, while browsing the internet, my computer shutoff. I turned it back on and then a few hours later while surfing the web, it shut off again. Now I was confused. I booted it up again, and kept any eye on the temperatures. While browsing the web and working on a paper, the PC shutoff again. The CPU never went above 34c and the GPU stayed at about 28c.

At this point I figured it was the GPU. I uninstalled the 660 and placed the 560ti back in. I sent the 660 back to amazon and ordered a 7850. While I was waiting for the 7850 to arrive, I continued to use my old 560ti without issue. Once the 7850 arrived, I uninstalled the 560 (drivers and all) and installed the 7850....When installing the drivers for the 7850, my computer shut off. I tried to install the drivers a few more times and each time the PC would shutoff.

I took the 7850 out and put it in my old Dell XPS 420 with a 2.4 q6600 and it has't shut down at all since I put the card in. Currently, I have the 560ti in my HPE Pavilion h8-1220 and haven't had it shutdown at all either.

Any ideas on what could be causing these video cards to shut down randomly in my HPE? I doubt it is the PSU because it powers my 560ti without issue.

 

[n1kko]

Just because the PSU powers one card doesn't mean it will power the other. Check the voltage requirements.

 

[woobm85]

Just because the PSU powers one card doesn't mean it will power the other. Check the voltage requirements.

Thank you for the reply. The voltage requirements for a system with a single HD 7850 requires a minimum 450W PSU with one 75W 6-pin PCIe power connector and should have 28A on the 12V rails. This is my PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139012 and this is the 7850 http://www.newegg.com/Product/Product.aspx?Item=N82E16814127663. From everything I can gather, the PSU should be more than sufficient. I would like to mention that I have not overclocked anything.

 

[n1kko]

Another thing, can your motherboard support the card? I had an issue with an old tower I had where The MoBo could not support the newer card, and it would shutoff every time i tried to use it.

 

[woobm85]

Another thing, can your motherboard support the card? I had an issue with an old tower I had where The MoBo could not support the newer card, and it would shutoff every time i tried to use it.

I am thinking it probably is the motherboard not being compatible with newer graphics cards. There maybe some damage to the motherboard as well because I just discovered that my rear USB ports do not work. I'm leaning towards just replacing the motherboard, however, I have head that it can be very hard to do with prebuilt computers from HP, Dell etc...

My question is, can i buy a new/different motherboard....as in not buying another of the exact same board that is already in my HP?

Here the spec for my motherboard:

Manufacturer: Pegatron
Form factor: uATX - 24.4 cm (9.6 inches) x 24.4 cm (9.6 inches)
Chipset: Intel H61
Memory sockets: 2 x DDR3
Front side bus speeds: 5 GT/s
Processor socket: LGA 1155
Expansion Slots:
1 PCI Express x16
3 PCI Express x1
1 PCI Express Mini Card x1
For more details, see Carmel2 motherboard specifications .

I'm not sure about the case dimensions. It just says it is a mid-ATX.

Also the model number I listed at the start of the thread is wrong. My PC is a HPE Pavilion h8-1110

http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&dlc=en&docname=c03018994#N1315