Trying to install HD 7950 w/ 600W PSU on a IPISB-CU motherboard. Anyway to Mod the MOBO to allow the compatibility of the GPU?

Xenexo

Reputable
Oct 16, 2014
8
0
4,510
Hello everyone,

I have a problem where if I install the default graphics card (GT540) it works. However when I want to upgrade to a Radeon HD 7950, it powers on but with no display. When I go to shut off the power it instantly shuts down. To me, this means it hasn't past the boot screen. The only way I can get it to boot with the card in the computer is either;
A) Unplug one of the 6-pin adapters from the GPU
B) Disable the PCI security
Other then that I am not able to use the new GPU. It works with all my other machines except this one.

My model number is HP Pavillion HPE h8-1120.

And yes I've updated all the drivers to everything.

Does anyone know of a bios mod that would help in this situation? I believe it's just a compatibility issue that HP doesn't want people to use different graphics cards besides the ones they supply pre-built.

Thanks,
 

COLGeek

Cybernaut
Moderator
It sounds more like your PSU is not sufficient to power the HD7950 rather than HP doing anything to prevent it from working (this is very unlikely BTW).

Are you using the stock HP power supply? What is the model number on the power supply itself?

Not all PSUs are created equally, in spite of what their labels may claim.
 

Xenexo

Reputable
Oct 16, 2014
8
0
4,510
This is the 1200W I used to test it http://www.staples.ca/en/OCZ-PPCMK3S1200-Mk-III-Series-1200W-Silencer-Power-Supply/product_1033120_2-CA_1_20001

Here are the links to the PSU's I've tested.

Extreme 2 525W CoolerMaster - http://www.newegg.ca/Product/Product.aspx?Item=N82E16817171065
RetailPlus® 600W Power Supply -http://www.staples.ca/en/RetailPlus-600W-Power-Supply/product_325590_2-CA_1_20001

Yes I've tested the 7950 with the 1200W psu and still to no avail.

In the BIOS I have it so that the default device is the graphics card.