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damaged CPU or Mobo?

post #1 of 12
Thread Starter 
HI,
I've just built a new system using:
Asus Sabertooth p67 B3
Intel i5-2500k
8gb Kingston DDr3 1600 RAM
Radeon HD 6770 Video card
850w power supply

Build all looked good powered it up and turned on the system.
Fans all ran, including CPU fan but no display and no POST
looking at the motherboard the CPU led was lit up flickering slightly.
I tried everything I could on the web to find a solution:

Re-intalled the CPU. 3x in fact
Ran just one stick of RAM
reset CMOS
Breadboarded it to make sure it wasn't a case short
made sure all power was going to board, CPU etc
checked the Mobo CPU for bent pins, none that I could see
no obvious damage to CPU.

Any ideas on what to do next or perhaps how to see if its the CPU or the motherboard that has the fault?

Thanks
post #2 of 12
Did you reset the power supply? More that likely it is the mb.
Edited by Knika - 10/23/11 at 5:58am
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My System
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Phenom II x4 965BE 4.0 ghz GA-MA785GM US2H XFX HD 6850 HyperX DDR2 800 X8gb 
Hard DriveOptical DriveOSMonitor
WD 160gb 7200 Plextor Win 7x64 LG 23.6" 1080P 
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Microsoft Corsair TX650 NZXT M59 Dynex 
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post #3 of 12
Thread Starter 
Completely power off, unplug, replug in and switch power supply back on you mean?

If so, yes every time I tried to restart the system. so over 6 times now.
post #4 of 12
Thread Starter 
OK, new Mobo, new chip, followed the procedures for installing the Mobo and chip tot he letter. Still instant red light on CPU led and no POST.

What am I doing wrong?
post #5 of 12
doa cpu or mboard.
post #6 of 12
Thread Starter 
I thought DOA board or chip.
Problem with that is that this is my second set of board and chip.
post #7 of 12
Thread Starter 
could it be the power supply. I have connected the 8pins to the CPU but I'm beginning to think maybe the voltage or something isn't up to it?
post #8 of 12
That's a tough one, your culprit could be *anything else* in your system. Don't suppose you have another running system that you could throw the HD's into, or power up with the PSU, or etc?

If you breadboarded your prior mobo I'm guessing you're handy with a multimeter, can you measure the rails on your PSU? (I said HD but edited DUHHHH)

Another guy reported that one of the switches on his ASUS mobo was thrown the wrong way (I forget which one), double check in the manual that you don't have something disabled or enabled that shouldn't be? CMOS jumper isn't in wrong position? I know, I'm really reaching here, just tryna help.

Could you take the gear to the shop you got it from and have them mount/benchtest it? I'm sure they'd rather do that than have a massive return.
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AX850 T600 
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post #9 of 12
Try to run it without ram. If u hear signal from system speaker then propably board is good. Turn then off unplug bios battery and clear bios for about 10 minutes. If it wont help its psu or mb. Try with only one ram stick.

Ok u did try it with only one ram stick Never heard of cpu DOA so it must be psu or something left behind mb that makes short circuit or u have bad luck and next faulty mb.
Edited by MoRLoK - 10/29/11 at 10:31am
post #10 of 12
Dumb question, But does the mobo go "bleep" when powered on?? and if it does sure its not your cable going to your screen?
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B|Ue L4Z0R
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[OCZ] Vertex 3 120gb, [WD] Caviar Blue 500GB TSST Corp CDDVDW SH-223SL Windows 7 Home Premuim (Hacked Explorer) [LG] E1940 19inch 
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Microsoft Keyboard 3000 v2 [Thermaltake] EVO_BLUE 650W SLI-Ready [CoolerMaster] HAF X Microsoft Wireless Mouse 5000 
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