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Hd 4890 three solid LEDs + computer won't post (no display)

Last response: in Systems
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December 11, 2009 4:15:35 AM

first, specs:

GIGABYTE GA-MA770-UD3 AM2+/AM2 AMD 770 ATX AMD Motherboard

HIS H489F1GP Radeon HD 4890 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card

Antec Basiq BP500U 500W Continuous Power ATX12V Version 2.01 Active PFC Power Supply

AMD Phenom II X2 550 Black Edition Callisto 3.1GHz Socket AM3 80W Dual-Core Processor Model HDZ550WFGIBOX

OCZ SLI-Ready Edition 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model OCZ2N800SR4GK

i built this 6 months ago and it's been great until yesterday morning. i power the machine ON and it won't post or display. the cpu / gpu spin, drives function, but the keyboard and mouse are without power.

temps have always been perfect (esp. when gaming).

the video card has three solid LEDs:

D1601 - Red LED On, shows critical temperature fault

D1602 - Red LED On, shows External power connector A was removed

D1603 - Red LED On, shows External power connector B was removed

thoughts?
December 11, 2009 5:12:01 AM

Seems like you having a boot problem... to fix the problem unplug crossfire and 1 video card and see if it will boot, if its liquid coolant check to see if theres enough coolant in the holding tank and clean the lines, clean the computer case, cpu fan, pws fan, gpu's fan with dust off or air compressor, try reseting the cmos and bios, and try a pws tester or a new one to see if it will boot
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December 11, 2009 5:15:20 AM

ace700 said:
Seems like you having a boot problem... to fix the problem unplug crossfire and 1 video card and see if it will boot, if its liquid coolant check to see if theres enough coolant in the holding tank and clean the lines, clean the computer case, cpu fan, pws fan, gpu's fan with dust off or air compressor, try reseting the cmos and bios, and try a pws tester or a new one to see if it will boot


i only have one card.

it's not liquid cooled.

i've cleaned the case, fan, etc.

reset the cmos (installed a new one, too)

i don't have access to a tester or a new one.

thanks for the tips, though.
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December 11, 2009 5:22:40 AM

NP
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December 12, 2009 5:17:05 AM

update: nothing to update - thoughts?
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December 12, 2009 3:47:10 PM

wow.... I have almost the exact same computer as you!!!!

Firrst thing is do u have both pin conenctros plugged into the gfx card? sometimes it does not draw enough power and will not run certain features. I plugged both connectors on mine just to be safe and its never bugged on me,
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December 12, 2009 6:37:58 PM

yeah, they're both connected.

btw, i 'checked' the checklist - nothing :( .
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December 12, 2009 7:04:58 PM

the keyboard and mouse aren't powering on; is this a mobo fault?
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!