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Started by shakezuulla | | 12 answers
Not enough power or Bad Processor? No Beeps, No Display
Hello All,

I have a new problem with my new build:

GIGABYTE GA-F2A88X-D3H FM2+ / FM2 AMD A88X (Bolton D4) SATA 6Gb/s USB 3.0 HDMI ATX AMD

SAPPHIRE 100363L Radeon R9 280X 3GB 384-Bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card

AMD Athlon X4 750K Trinity Quad-Core 3.4GHz Socket FM2 100W Desktop Processor - Black Edition AD750KWOHJBOX

Team Dark 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model TXD38192M1600HC9DC-D

Seasonic X Series 750W Power Supply

It seems the CPU fan seems to fluctuate in speed when plugged in, it will sound normal than a brief surge or push of air than back to normal.

I've tried unplugged everything excepted for the CPU and Motherboard, still the same.

Unplugged all memory and get a series of small beeps, which indicate that memory is not seated or installed properly, so can I assume the board is OK?

Thanks for all your help.
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October 14, 2014 11:36:59 AM

Great! Glad to hear you are up and running!
October 14, 2014 11:35:47 AM

Hello All,

I just wanted to day that it was the GPU. Sapphiretech.com was able to send me a new one under warranty... this card had 2 8pin PCIe connectors that matched up with my power supply. Booted up the very first time.

Thank you all for your input. :)  Tom's Hardware is the best!
September 18, 2014 10:32:03 AM

You're very welcome, I hope it solves the problem and you can enjoy your machine!
September 18, 2014 10:29:28 AM

dwatterworth said:
I would think the GPU is the malfunctioning part if it won't power on with both sockets plugged in to the correct spots on the PSU. It's so frustrating when that happens and you can't test it etc. It leaves so many open possibilities if you can't see anything on the screen etc.



The GPU is still under warranty. I sent it back today, I will let you know what happens. Thank you all for your help, it's much appreciated!

Best solution chosen by shakezuulla

September 17, 2014 10:17:24 AM

I would think the GPU is the malfunctioning part if it won't power on with both sockets plugged in to the correct spots on the PSU. It's so frustrating when that happens and you can't test it etc. It leaves so many open possibilities if you can't see anything on the screen etc.

September 17, 2014 9:27:58 AM

dwatterworth said:
Do you have access to another GPU? Maybe an old one from work or a friend that doesn't require any additional PCIe power connectors?

Hmm, that is very strange about the GPU powering on without all the connectors. Do you have alternate PCIe cable spots on the PSU that you could try?

The 8 pin CPU power connector is plugged in and is definitely in the correct spot on the PSU? If things are powering on and the drives are initializing etc, I'd look more at the PSU or GPU for the issue. Triple checking all power cables and correct locations from the PSU manual.

Is the GPU known to be good? Can you test it on another computer by any chance? You're stuck if the GPU won't power on and if you don't have access to another since the CPU has no onboard graphics.


Unfortunately this is the only system that I have that I can test it on. Could it be that the graphics card is defective? I've trying all kinds of combinations with the wires, but every time I plug in both the 6+2 connector and the 6 connector, the system seems to short out.
September 17, 2014 8:39:06 AM

Do you have access to another GPU? Maybe an old one from work or a friend that doesn't require any additional PCIe power connectors?

Hmm, that is very strange about the GPU powering on without all the connectors. Do you have alternate PCIe cable spots on the PSU that you could try?

The 8 pin CPU power connector is plugged in and is definitely in the correct spot on the PSU? If things are powering on and the drives are initializing etc, I'd look more at the PSU or GPU for the issue. Triple checking all power cables and correct locations from the PSU manual.

Is the GPU known to be good? Can you test it on another computer by any chance? You're stuck if the GPU won't power on and if you don't have access to another since the CPU has no onboard graphics.
September 17, 2014 8:33:22 AM

dwatterworth said:
The GPU needs to have both power connectors plugged in to work. The card uses a 6 pin and 8 pin connector correct? I'd try using a separate cable to each connector, so 2 pcie cables vs using both the 6 pin and 6+2 pin from the same cable. Those X-series PSU's are awesome but tough to read where to plug the damn pcie devices in vs the peripheral items (at least on the gen 1 X-850 I had, not sure on later revisions), so maybe double check those connectors on the PSU side as well unless Seasonic realized using label paint that was only 1% lighter than the black PSU body paint wasn't the best idea...


Plugged them both in, PC flickers on for not even a second and then nothing, nothing comes on. When I have the 6+2 connector only, Graphic card is on with both fans spinning as well as everything else coming on.

Aside from that, should the on board graphics work? I'm concerned that it's not posting, that I get no beeps, unless I remove all the memory. I've tried reseating everything as well.
September 17, 2014 8:32:00 AM

Sounds like everything is ok but in order to power your gpu both 8pin+6pin cable should be plugged on the gpu. Make sure your 24pin is properly sited on the mojo plus the cpu 6pin connecton. Be carefull pci-e and cpu cable looks identical but they are not.
Your psu is powerfull enough for your build so no issue on that...
If when power on alla fans works 100% for like 2 or 3 seconds then thats normal.
September 17, 2014 8:16:37 AM

The GPU needs to have both power connectors plugged in to work. The card uses a 6 pin and 8 pin connector correct? I'd try using a separate cable to each connector, so 2 pcie cables vs using both the 6 pin and 6+2 pin from the same cable. Those X-series PSU's are awesome but tough to read where to plug the damn pcie devices in vs the peripheral items (at least on the gen 1 X-850 I had, not sure on later revisions), so maybe double check those connectors on the PSU side as well unless Seasonic realized using label paint that was only 1% lighter than the black PSU body paint wasn't the best idea...

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