Member Avatar for A1pheus 
So I recently bought a whole bunch of computer parts in hopes of making my first build. 


Specs: Intel LGA1155 DDR3 1600 ATX BOXDH77KC
       Corsair Vengeance Blue 16 GB DDR3 SDRAM Dual Channel Memory Kit CMZ16GX3M4A1600C9B
       Intel i7-3370 Quad-Core Processor 3.4 GHz 4 Core LGA 1155 BX80637I73770
       GeForce GTX 550 Ti
       Corsair Enthusiast Series 650-Watt 80 Plus Bronze Certified Power Supply
       Western Digital Caviar Blue 500 GB SATA III 7200 RPM 16 MB Cache
       Windows 7 Home Premium SP1 64bit
       Samsung SH-222BB/BEBE 22X SATA DVDRW Drive
       Antec 9 Hundred Black Steel ATX Mid Tower Computer Case


I set everything up just as instructed by with the instructions that came with the motherboard. When I thought everything was good, I plugged in the power source to see if it worked. I noticed a light on the motherboard that said 'standby power" turned green. I hit the power button, the fans spun and the lights turned on, but only for about two seconds before shutting off again. I repeated the process about 3 or 4 times with the fans moving and lights turning on, then dying two seconds later. On the 5th attempt however, I heard like a pop or a snapping noise, and the stanby power light on the motherboard turned off. Now I can't get the comptuer to turn on at all. I was just wondering did I fry my motherboard, or did something else happen. I would just like to know before I go out and invest in things that wont help my situation. I'm completely in the dark here someone please help me D:
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A single audible “pop” followed by the motherboard standby LED going out most commonly points to either a failed power supply (often the 5VSB or PSU input stage) or a short / failed component on the motherboard (VRM, fuse, MOSFET, or a capacitor). ’s advice to bench-test with minimal parts is the right starting point; since already tried that, focus next on isolating the PSU and any board shorts. Several members here, including and , reported that replacing the PSU fixed similar symptoms — so that’s a high-probability lead to follow up on.

Try these checks in order:

  1. Safety and visual inspection: unplug mains, unplug all cables, and look carefully for scorch marks, blown or bulging capacitors, or a burnt smell around the 24‑pin/CPU VRM area.
  2. Remove the motherboard from the case and confirm only the correct standoffs are installed; an extra standoff or screw can short the PCB. Inspect the underside for scratches or contact.
  3. Test the PSU: if possible, swap in a known-good PSU or use a PSU tester. If neither is available and you know what you are doing, briefly check the PSU standby rail with proper tools (multimeter or tester). A dead or missing 5VSB is a common cause of the standby LED going out.
  4. If the PSU tests good, look for a blown onboard fuse or visibly damaged power components near the CPU socket; these are signs the motherboard took the hit. Some boards have replaceable fuses, but repair is advanced.
  5. Quick sanity checks before RMA: reseat CPU and RAM, try a single known-good stick in each slot, and bypass the case power switch by shorting the power pins briefly.

If swapping the PSU restores power, the PSU was at fault. If not, document visible damage with photos and contact the motherboard vendor for RMA (include what you tested). Avoid repeated power attempts after a clear “pop” — further attempts can worsen damage.

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All 7 Replies

Member Avatar for A1pheus

I was using an anti-static wrist strap while doing the build as well, in case anyone was wondering.

Member Avatar for JorgeM

Its sounds like you overloaded something on the motherboard. Remove all of hte components except for CPU and RAM and see if you can get it to power on.

Member Avatar for A1pheus

Yea that didn't work. All that is in there is one stick of ram, the cpu, and the power supply in their respective sockets. I flip the switch on the power supply, and the light still doesnt turn on, neither will the computer when i push the power button on the case.

Member Avatar for JorgeM

sorry to hear about that. Possibility that you bought this using a credit card that provides warranty at no additional cost?

Edited by JorgeM
Member Avatar for A1pheus

Yea, but I am just curious, could I have fried my motherboard, or has something else happened. Based off of what I told you, what else do you think could have happened, or did I for sure fry the motherboard?

Member Avatar for nicholite

i think it is possible that its ur PSU that has Burnt.?
i too have experiance in the turning on and shutting down after two seconds. turns out to be a faulty PSU. but now im having a Power on but no display problem with my brother's pc.. >.<

Member Avatar for Abdul_114

same problem here.But after i change my power supply,my pc come back normal

Edited by pritaeas because: Removed bold text
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