PC not booting after BIOS reset

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cocobly

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Mar 30, 2017
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After loading the optimized values for my BIOS I restarted my PC and nothing happend. I get no POST beeps, no screen. Things I already did:

  • ■ Removed graphics card and tried VGA, DVI and HDMI port on my motherboard
    ■ Tried resetting the BIOS by removing CMOS battery and shorting the CMOS jumper. I also left the CMOS battery out over night.
    ■ Breadboarded my build with only Motherboard, CPU and PSU. (in this case i get the beep code for missing memory)
    ■ I tried a different PSU and Memory
    ■ I tried my PSU/memory in an other build
I suspect that either my motherboard or my CPU is dead, but I don't have the possibility to test them in an other build. Is there any possibility to check if either the CPU or the motherboard is the problem without checking them in another build?


My build:
Motherboard: ASUS Z-87K
CPU: Intel Core i5-4670K, 4x 3.40GHz
Memory: Kingston HyperX Blu 8GB Kit 1333MHz DDR3 + Kingston HyperX Blu 4GB 1333MHz DDR3
PSU: Enermax 550W
Graphics card: Sapphire Vapor-X R9 280X 3G D5
 
Solution
P
You only got part way with the Breadboard process. You tested the really basic system with mobo, PSU and CPU chip, and it gave the expected error. The process after that is basically to add one component at a time and try to boot. If it does with enough success (allowing for what you know is missing), the last thing you added is OK, so you shut down, add another component, and repeat. Keep this up until you find the failure.

So, next add the monitor so see what the system sends out to that. Then add the keyboard. Then add ONE RAM stick in the correct slot. At this point it should be able to compete the POST and tell you that it failed to find a bootable disk. Then you can add the rest of your RAM and see if it still works that far. If...
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Paperdoc

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Oct 19, 2006
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You only got part way with the Breadboard process. You tested the really basic system with mobo, PSU and CPU chip, and it gave the expected error. The process after that is basically to add one component at a time and try to boot. If it does with enough success (allowing for what you know is missing), the last thing you added is OK, so you shut down, add another component, and repeat. Keep this up until you find the failure.

So, next add the monitor so see what the system sends out to that. Then add the keyboard. Then add ONE RAM stick in the correct slot. At this point it should be able to compete the POST and tell you that it failed to find a bootable disk. Then you can add the rest of your RAM and see if it still works that far. If it does, now is the time to add a HDD that it can boot from.
 
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