Maximum PC

So while at work the other day my upstairs bathroom and kids bedroom lost power. Resetting the breaker didn't fix it so I bought a new breaker and everything came back on....except my desktop. The monitor and surround sound system all power on fine, the desktop itself does nothing when pressing the power button (All 3 things were on the same surge suppressor strip)

Steps I've done so far:
1- Disconnect everything from the case except PSU cord to outlet. Toggele PSU hard switch and try power button, bupkis.
2- Connect PSU cord directly to tested working wall outlet and attempted to power machine, nothing.

I'm going to try more troubleshooting today, but I've never worked an issue like this and I'm looking for some help in narrowing the faulty component down. (PSU, Mobo, component).

The machine is a Cyberpower custom built with:
PSU - XTREMEGEAR 700 WATT POWER SUPPLY
CPU - Intel I5-3570K
Mobo - ASUS P8Z77-V LK Z77 CROSSFIRE/SLI SATA 3.0 USB 3.0 LG
GPU - nVidia GTX 470
RAM - KINGSTON HYPER-X 4 GB DDR3/ 1600 MHZ
HD1 - 128GB OCZ VERTEX 4 SSD (Windows Drive)
HD2 - 1TB Seagate

If you want to confirm the PSU is blown, short pins 21 and 22... I believe. It's the green wire to any of the black ones.

what am i looking for by shorting pins?

If the unit powers on. You can plug in something into the other connectors to check if power is being supplied I believe.

ok, I'll give this a shot tomorrow morning and let you know what happens.

jumped the pins and attempted to power up psu, nothing. no noise like attempting to start, just stayed off. assuming that indicates a dead psu?

If you doubly checked everything, then yeah, it's dead.

well, better psu than the motherboard i guess.

You won't know if anything else is toasted until you replace the psu.
Ask me how I know.

I agree with dedgar. I would be especially worried about the SSD as they are extremely susceptible to any sort of voltage spikes or sags.

I'm going to pick up a new psu tomorrow and see if that resolves everything. i hope it does, keep everyoneupdated.

took a while to get to the store. got a OCZ 700w dual rail psu and everything works fine now. thanks for the help everyone.

i thought dual 12v rails was preferred to run SLI?

While I tend to agree with kleinkenstein (and I do prefer PSUs with a single +12V rail), I happened across this little bit of information that I found to be both interesting and enlightening: http://www.jonnyguru.com/forums/showthread.php?t=3990/

Good information, helped me correct some misconceptions I had. In either case, I think the PSU I picked up is good and will cover my current config and future SLI upgrade.

New PSU - http://www.ocztechnology.com/ocz-500w-7 ... upply.html

I think you made an excellent choice. It has active PFC and overvoltage protection as well as the power you need to run your rig. Good luck!