Computer won't turn on after new HDD added.

Daniel Lips

Reputable
Apr 17, 2014
5
0
4,510
Hello,

I built my first rig about 3-4 months ago. It's been working beautiful until last night.

2 Nights ago I added my old HDD from my last computer to it. Worked great. I shut down my computer, then last night I tried to turn it on and... nothing. The worst part about this is that I just got rid of my old computer literally the night before, and it's in the mail to the other side of the country, so I don't have a another rig to test the PSU on.

The motherboard has the green light. Something REALLY weird is that the USBs are supplying power to my speakers/bluetooth dongle but not the keyboard/mouse (with the PC off), although this might of been the case before and I just didn't notice it.

And because I want to provide every detail, one of my chassis fans are located on the side of the case I pulled off when I was installing my old HDD, and I forgot about that, so when I pulled it off it pulled it out of the pins on the mobo. My motherboard incorrectly describes where this chasis fan goes, so I plugged it into a couple different places around the chasis fans until it worked. I highly doubt this did anything especially if it didn't cause immediate damage. But just wanted to provide every detail.

And no, I didn't nudge the power pins, etc. All connections are properly seated, tried a few different power cords, outlets, etc.

My question is this: Could it most likely be PSU, Motherboard, or a bad pwr on wire? I don't know what else it could be.

Also my motherboard is a z87 Sabertooth. It seems these do die on people.

Thoughts?
 
Here's what I'd recommend:
1) Reset CMOS after unplugging the power either by shorting the appropriate pins on the MB or remove the coin battery for 5 min.
2) After CMOS reset, go into BIOS, load "Optimized Defaults, save and reboot.
3) Update chipset drivers from MB website.
4) Last resort: Update the BIOS to the latest version.

Yogi
 

Daniel Lips

Reputable
Apr 17, 2014
5
0
4,510
Yes the old HDD was working fine on my new computer for one night.

And Yogi- I reset the CMOS and it didn't do anything. I can't go into BIOS because the computer won't turn on at all. No fans, no LEDs, no nothing.
 


Will it power up if you disconnect the "New" HDD?

Yogi

 


Hmm....... This is starting to sound like a PSU problem.

Remove the 24 pin PSU power connector from the MB. Try shorting across the green and any black wire on the PSU plug with a paper clip bent into a "U" shape. See if the PSU will power up.

Yogi

 


That PSU is one of "the best of the best". A very good, and quite expensive, unit: http://www.hardwaresecrets.com/article/Seasonic-X-Series-850-W-Power-Supply-Review/1169/10

No load is necessary for the "Paper Clip Test".

Yogi

 


Not necessarily. The test only shows if the PSU will turn on if it is given the proper "command". If the PSU fails this test, then yes, you have a bad PSU.

Yogi