- Nov 18, 2012
- 49
- 1
- 10,540
It's running a fresh (yesterday fresh) Windows install. Symptoms being:
- About once every three boots it fails to post and the red led on the Sapphire card (afaik it indicates energy issues) turns on.
- Randomly, even idling on desktop (so cpu core load should be 0%), it loses power (red led also turns on) and doesn't even respond to a holding down the power button, forced to cut its power D:
Fairly sure I've isolated this issue to the combination of that specific motherboard and gpu, and the fact even a 1500W psu won't fix it, as so far I've tested:
- upgrading from a 700W, average-ish quality psu to the currently installed top-end 850W psu. this got the gpu significantly cooler (when it managed to boot), but didn't fix the problem.
On a related note, the AX850 was installed on a functional system before this and didn't ever present any issues.
- different cpu and ram (didn't fix it)
- that same HD4890 on another system (worked alright)
- a different gpu (a 8800GT) on that system (also worked alright)
- updated the BIOS on the M4A78T-E to version 3503 (latest from the Asus website), with no effect on this problem
- added the cable from the AX850 as if I was installing a second gpu and used one 6-pin connector from each (also didn't fix it)
The full hardware specs on this system are:
Asus M4A78T-E
AMD Athlon II X2 270 @ stock frequency
Patriot Signature 1x8GB
Sapphire Vapor-X Radeon HD 4890 1GB
Corsair AX850
Western Digital 500GB (model AAKX)
Cooler Master Hyper 212 Plus
Cooler Master 120mm case fans (three of them)
I don't know what else to try. Any help or insight on this will be highly appreciated.
- About once every three boots it fails to post and the red led on the Sapphire card (afaik it indicates energy issues) turns on.
- Randomly, even idling on desktop (so cpu core load should be 0%), it loses power (red led also turns on) and doesn't even respond to a holding down the power button, forced to cut its power D:
Fairly sure I've isolated this issue to the combination of that specific motherboard and gpu, and the fact even a 1500W psu won't fix it, as so far I've tested:
- upgrading from a 700W, average-ish quality psu to the currently installed top-end 850W psu. this got the gpu significantly cooler (when it managed to boot), but didn't fix the problem.
On a related note, the AX850 was installed on a functional system before this and didn't ever present any issues.
- different cpu and ram (didn't fix it)
- that same HD4890 on another system (worked alright)
- a different gpu (a 8800GT) on that system (also worked alright)
- updated the BIOS on the M4A78T-E to version 3503 (latest from the Asus website), with no effect on this problem
- added the cable from the AX850 as if I was installing a second gpu and used one 6-pin connector from each (also didn't fix it)
The full hardware specs on this system are:
Asus M4A78T-E
AMD Athlon II X2 270 @ stock frequency
Patriot Signature 1x8GB
Sapphire Vapor-X Radeon HD 4890 1GB
Corsair AX850
Western Digital 500GB (model AAKX)
Cooler Master Hyper 212 Plus
Cooler Master 120mm case fans (three of them)
I don't know what else to try. Any help or insight on this will be highly appreciated.
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