My rig wont boot once I add my third graphics card

st4nl3y

legendary

Activity: 1050

Merit: 1000

I am having a similar problem and just came across this thread and decided to bring it back to life. can anyone help.?

Trying to add 3rd gpu to my rig but whatever i do it just won't boot to bios, just blank screen and no video output signal. With 2 cards it's working fine. I already tested each card seperately, or in pairs, on different pci-e slots, with or without risers, with no luck. I suspect it's my PSU but would like to ask for advice before I buy another one.

asrock z77 extreme 4-m
intel cpu
6 gb ram
250gb sata
3x sapphire r9 270x
corsair 750W PSU
x1 - x1 risers

any help kindly appreciated

fattypig

full member

Activity: 224

Merit: 100

Quote from: loourr on October 07, 2013, 03:10:00 PM

Im making a rig with these hardware specs

motherboard - MSI Z77A-GD65 Z77 DDR3 1600 LGA 1155 Motherboard
graphics cards - 4 X Sapphire Radeon HD 7950
CPU - Celeron G1610 Processor
PSU - LEPA G Series 1600-Watts
RAM - 4GB Corsair DDR3 RAM

and I'm running Xubuntu 13.04 and I'm using cgminer

I've gotten everything working with just two GPUs however when I plug in a third xubuntu freezes during the boot screen, and then does nothing. I have no idea whats causing this. I've switched out the graphics card for another but that didn't fix the problem.

Could it be the operating system? I've tried re-installing but that didnt fix anything.

Any ideas as to what could be causing this?

here is a link with some pictures of the error reposts on stack exchange:
http://superuser.com/questions/654888/computer-wont-finish-booting-after-i-install-a-third-graphics-card

Thanks for any help
Loourr

I believe your motherboard can work up to 7 GPU.

1) Try installing window on another partition just to test it out.
2) Use different PCIE slot.

loourr

newbie

Activity: 21

Merit: 0

Im making a rig with these hardware specs

motherboard - MSI Z77A-GD65 Z77 DDR3 1600 LGA 1155 Motherboard
graphics cards - 4 X Sapphire Radeon HD 7950
CPU - Celeron G1610 Processor
PSU - LEPA G Series 1600-Watts
RAM - 4GB Corsair DDR3 RAM

and I'm running Xubuntu 13.04 and I'm using cgminer

I've gotten everything working with just two GPUs however when I plug in a third xubuntu freezes during the boot screen, and then does nothing. I have no idea whats causing this. I've switched out the graphics card for another but that didn't fix the problem.

Could it be the operating system? I've tried re-installing but that didnt fix anything.

Any ideas as to what could be causing this?

here is a link with some pictures of the error reposts on stack exchange:
http://superuser.com/questions/654888/computer-wont-finish-booting-after-i-install-a-third-graphics-card

Thanks for any help
Loourr

Topic: My rig wont boot once I add my third graphics card (Read 2364 times)