computer shorts out with hdd installed

February 11, 2011 at 05:47:10
Specs: Windows 7 64 bit, Phenom II x6 1090
I recently built a new system for myself and it worked fine for about 2 months then it just started turning itself off randomly.
i had a hx1000 power supply in it when it started to do this, i then proceded to remove all the hardware from the power supply to try and work out what the problem was i found that my harddrive was no longer working so i put a new one in that lasted about 4 hours before it died as well.
I then discovered that i could not start the computer with any harddrive connected to the power supply, and hooking the harddrive to the power supply during post would short the computer out.
So i removed the harddrive all together and just left the computer running in the BIOS menu it ran for about 30 minutes then turned off.
I took the 450w power supply out of my other computer and hooked that up without the harddrive and left it running in the bios menu. It runs without any hiccups but if i connect my new harddrive to it it shorts out.
this problem has got me completely stumped i've had the motherboard checked and it works fine i'm completely out of ideas.
My system specs are as follows.

Motherboard: ASUS Formula IV
Cpu: Phenom II X6 1090t
Ram: 8gb kingston hyper x
Graphics: Sapphire HD5970
HDD: Seagate Barracuda 7200
Cooling: Thermaltake bigwater
PSU: Corsair HX1000

Any help or ideas would be greatly appriciated

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February 11, 2011 at 06:01:49
Ive seen similar problems with certain HDDs demanding more power than they should. If you had a voltage meter you would probably see the power fluctuating violently or running steadily way way above where it should be. I consider issues like these a dead Hard Drive *Moment of silence*

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February 11, 2011 at 12:32:23
Not sure exactly what you mean by 'shorts out'. Do things start smoking? Does it not turn on or does it turn on and then shut off?

Is the hard drive the only drive on that data cable?

Anyway, try connecting the power cable to the drive but leave its data cable disconnected. Then see what happens. Try different power connectors. If the computer starts up OK (obviously it won't detect the HD) then the problem isn't with the PSU. Then try a different data cable.

How about those Packers Steelers Packers!

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February 11, 2011 at 14:41:20
If you were connecting/disconnecting the power cable to your drive while the power was turned on you have probably fried the drive. That may be the reason the system fails even when you connect a known good powersupply. Your careless testing technique has compounded your original problem which seems to have been a failed power supply.

Goin' Fishin' (Some day)

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February 11, 2011 at 15:14:03
No it doesn't start smoking or anything like that it just turns off but the power led's on the motherboard remain on.
the harddrive is the only thing connected to that data cable and i run it on its on power cable as well, i've tried starting it without the data cable attached and when i press the power button everything lights up like it should do then turns off a split second later.
I have also tried diffrent power conectors and the problem is the same.

I'm well aware that you shouldn't connect anything to the power supply once you have turned it on when i managed to get it to start without the harddrive connected i then connected it after and it turned off knowing that you shouldn't that i only did it once just to be absolutely sure thats what was causing the problem.

One other thing i forgot to mention which i'm sure is related to the power supply my dvd drive is now dead also, i installed that the same time i installed the first new harddrive, also attached to its own power cable and data cable.

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February 11, 2011 at 15:17:16
Try a new psu. Just because some of the components work, doesn't mean it's supplying enough power to the whole machine.

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