Bad Motherboard or CPU?

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Whovian98

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May 6, 2013
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Hello all! The other night I had moved my computer from room to room, and set it up so I could play movies for some guests... It worked great, but when I moved it back to where it should be, it wouldn't work. All the fans would start up, all the lights would come on, but the screen would remain black. I tried it on several tvs. I switched out the graphics cards with a known working graphics card (my first thought... Unfortuntaly wrong) It still wouldn't boot. I tried this several times. Then this afternoon I began dissassembling it and testing it piece by piece. The hard drive is good, the graphics cards are good, the power supply is good. So I've pretty muched nailed it down to either the motherboard or the cpu, as far as I can tell. Now the problem I have is that I have no other AM3+ platforms readily available to test these parts on, so I've come to you guys for some help. Is there any way to secifically tell if its a bad CPU or motherboard? And in case you need the specs:
AMD FX-6300
Thermaltake TR2 700 W power supply
OCZ Vertex 2 SSD
2 x Radeon 7870s in crossfire
ASRock Extreme3 990fx Motherboard
2 x 4gb Kingston Hyper X Black DDR3 1600
CoolerMaster Hyper 212 EVO CPU cooler
Windows 7 Home Premium
Cooler Master Storm Scout
This combination works very well, has it has been running solid for about 2 months now... But it went kaput last night. So, any tips on how to figure out if its the motherboard or cpu? Or if its something else entirely that I am missing? Any help is appreciated! Thank you!
 
Solution
alexoiu
If clearing the CMOS will not fix the issue, I suggest reseating the CPU and reinstalling the CPU cooler. Maybe some shocks occurred during the transportation.
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Whovian98

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May 6, 2013
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Oh, okay, thanks DeadRam! I didn't think about trying to make it make beeps with the lack of RAM or anything. May I ask what the CMOS battery is/does? I'm pretty sure I know what little bit it is, but I'm not exactly sure what the purpose is. And I'm afraid I'm not sure what you mean by jump it to reset the BIOS? And Alexolu, the cable is fine, I had another computer that I was using as a sort of testbed to test the various parts.
 
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Whovian98

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May 6, 2013
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So update... I have just the Motherboard, CPU & its cooler, and the power supply hooked up... No RAM, Graphics cards, or Hard drives/optical drives hooked up. It gave me 3 long beeps.. Any idea what that means?
 
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Eximo

Eximo

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May 27, 2010
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From the AS Rock Support site:

Normal 1 short beep after POST With goodnight LED enabled, debug code will disappear after the beep.
Bad CPU No beep No debug code
Bad memory No beep 45
Without memory 3 long beeps 53
Without CPU No beep(No Power) No debug code
Without VGA card 5 long beeps Beeps at”d6”, then show "0d"

Sounds like you may have got it working again.
 
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