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Crosshair V won't POST anymore

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February 24, 2012 7:02:26 PM

AMD Phenom II X6 1090T
Kingstom HyperX DDR3-1600 KHX-1600C8D3T 1k2/4GX
ASUS Crosshair V MOBO
WD10 EARS 1TB 5400 RPM "Green"
PNY GTX 470 1.25gb
Antec TPQ-1200W (without fan control knob)
Antec nine-hundred two v.3
Windows Ultimate 64 bit

I had made the switch from MSI's god-awful 870A-G54 to the Crosshair V back in June. Everything ran hunky-dory and I downloaded EVGA precision to underclock the vid card so it wouldn't overheat. Around the end of September/beginning of October the computer wouldn't POST. So I moved the video card to a different slot and it worked for a few days then nothing happened again. I cleared CMOS the first time by moving the jumper and it would work again. Then the hard drive starts making a high-pitched whine during startup but everything was working so I didn't think about it again.

Then it wouldn't POST again so I used the clear CMOS button on the back of the board. And it would work again.

Long story short. The GPU and boot device LEDs are lit up. Did I fry the video card and the hard drive or did I end up with a faulty board? I didn't think I'd be going through this crap again after MSI.

More about : crosshair post anymore

February 24, 2012 8:20:00 PM

A faulty board is never impossible, but I would have expected things to go wrong from day 1 then. Try booting without the HDD and try a different graphics card, preferably a borrowed one that you know is working.
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February 25, 2012 2:47:21 PM

i had the same kind of prolem with my old Gforce xfx MX4 graphics card, later then i realised that it's totally fried !!! :( 

But prolem ur facing seems to be diferent, it is possibly something to do with the underclocking seting you just made!! probably!! :) 

i would try checking BIOS setting too and set it default values!

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May 10, 2012 3:56:20 AM

had same problem and i discovered one pin on the bios chip was bent. fixed it and problem went away
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a b V Motherboard
May 10, 2012 4:25:09 PM

Try boot up
CPU + MOBO + RAM
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a b V Motherboard
May 10, 2012 4:26:44 PM

+ Make BIOS default
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!