Computer does not turn on when Hard Drive is plugged into power supply

Alek Mieczkowski

Honorable
Dec 25, 2013
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0
10,510
Hi all,
Im building a new computer for christmas but i'm having an odd problem. If i turn the computer on with nothing but the motherboard, cpu, and ram installed it goes to POST, however if i plug in a SATA Hard drive into the power supply I cannot turn the computer on... the same thing happens when i plug in a graphics card. Any suggestions on how to fix this?

My specs:

Intel i7 3.5 ghz (with Thermaltake water 3.0 extreme cooling_
Cooler Master Silent Pro M 1000W
EVGA GeForce GTX 780
Asrock z77 Extreme 6
Corsair 16 gigs ram (2x8 sticks)
Crucial M500 2.5inch solid state drive(240 gb)
Seagate Barracuda 7200rpm 1TB hard rive (from old computer)

Thank you in advance!
 
Measure the resistance across the +5V and +12V supplies. Disconnect the AC power from the PSU just to be safe.

Do this with either the HDD or the graphics plugged in. If there is a short circuit on either device, then the PSU will give one kick of its fan and then shut down.

In the case of the drive, examine the PCB for a shorted TVS diode. Removing the diode should fix the drive. If you can provide a photo, then I may be able to identify the faulty component.

See http://www.users.on.net/~fzabkar/HDD/TVS_diode_FAQ.html
 

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