My led on the case turns on but, nothing else powers up.

SkylarPurifoy · Oct 20, 2014

I recently replaced the CPU heatsink and fan. When I put the new part back in and went to turn the PC on only the led light on the case turns on. Nothing else powers on, not the fans, not LEDs inside the case. From my research it says a dead mobo but the mobo is less than 2 weeks old and the PC was working prior to me changing the heatsink. I checked all the connections from PSU to mobo and everything seemed fine. Any ideas on how I can fix this? Or if I need a new mobo? I hope not because I literally ordered and built this PC less than two weeks ago

alexoiu · Oct 20, 2014

Try testing the board outside the case, only CPU and CPU fan installed. Make sure that both 24 and 8 pin power cables are in place and CPU fan cable connected.
See if the CPU fan is spinning when starting the board.

SkylarPurifoy · Oct 21, 2014

alexoiu :

Alright before I wanted to take my pc apart I tried moving RAM slots. When I went to power the PC on again by pressing the power button on the LED case, I hear a noise coming from inside the case like it is trying to power on. I switched outlets and pressed the power button and again same noise. Sounds like its maybe coming from the PSU but I can't be sure. Should i still take apart my PC and test the mobo outside of the case? Or is it something different?

alexoiu · Oct 21, 2014

It might be a power supply issue. I would test the board outside the case. Much easier to troubleshoot.

SkylarPurifoy · Oct 21, 2014

alexoiu :

so I have tested the mobo outside the case. It powers on for maybe 3 seconds before resetting itself. Fans for the PSU and the CPU do power on as well. What's next?

alexoiu · Oct 21, 2014

Try reinstalling the CPU fan. Clean the old thermal paste and reapply. Mount the CPU fan, then start the board with only CPU and CPU fan installed. See if the CPU fan does spin without resetting.

SkylarPurifoy · Oct 22, 2014

Ok, I reseated the heatsink and fan but again still resetting. However when i reseated the heatsink and fan it appears that only one side of the heatsink is fully touching the cpu. And when i try to push the pins all the way into the mobo only two of the four pins actually lock into place. Should I buy another heatsink and fan and try to reinstall in order to get the heatsink fully touching the cpu?

alexoiu · Oct 23, 2014

Hard to say what's wrong with the heatsink. What model?

SkylarPurifoy · Oct 23, 2014

Im not exactly sure. Its an Intel. It came with my i5

alexoiu · Oct 24, 2014

Check a video on Youtube for how to:
http://www.youtube.com/watch?v=npo2aGLR2Uc or similar. See if you've correctly done it.

SkylarPurifoy · Nov 5, 2014

alexoiu :

So I bought a new CPU fan and heatsink and placed on the CPU according the video. Still getting the CPU fan starting up for about 3-5 seconds and then turning off only to repeat the process again until i turn off the power.

alexoiu · Nov 5, 2014

What CPU and motherboard? And why have you replaced the CPU and heatsink?

SkylarPurifoy · Nov 10, 2014

Processor: Intel Core i5-4690K Devil's Canyon Quad-Core 3.5GHz LGA 1150 Desktop Processor BX80646I54690K

mobo: GIGABYTE GA-Z97X-Gaming 3 LGA 1150 Intel Z97 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard

some of my friends think that i may have a short on the mobo. Do you think that is a possible problem that i could be getting?

alexoiu · Nov 10, 2014

The CPU requires a BIOS update. What are the 4 digits after SN in the board's serial (for checking the manufacture date and the original BIOS version)?

SkylarPurifoy · Nov 11, 2014

alexoiu :

where would i look for the SN?
Nevermind, i looked under the cpu. had some bent pins on the board. Replacing the mobo now. Thanks for all the help

alexoiu · Nov 11, 2014

On the motherboard's box.

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My led on the case turns on but, nothing else powers up.

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