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01-15-2013, 11:48 AM
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#1
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Diamond Member
Join Date: Nov 2010
Posts: 3,473
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Computer completely dead. PSU?
Last night the computer worked fine.
It has always worked fine.
I shut it down last night.
This morning it won't turn on.
Nothing has changed. I looked inside and there is no LED light on.
Did the PSU die suddenly?
Specs:
i5 ivy bridge 3450
Nvidia GTX 560 ti 448
8gb ddr3 ram.
2tb 7200 RPm HD
120GB SSD
400 watt PCPower MKIII PSU.
Yes, 400 watt seems low, but it had never given any problems in the past like 6 months. Also, it was recommended here as superior to many 500 watt models, and all of the PSU calculators I saw say my average power draw should be 320 watts and max 384 -- within range.
Any other advice? What could have happened? there's no smell, nothing.
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01-15-2013, 12:23 PM
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#2
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Diamond Member
Join Date: Sep 2005
Posts: 3,344
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400W is plenty.
If there is no LED, then your PSU probably died. Unplug/replug the power cord. Check to make sure the power switch on the back of the PSU is on. If it doesn't even begin to turn on, it's probably the PSU.
__________________
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01-15-2013, 12:48 PM
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#3
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Diamond Member
Join Date: Nov 2010
Posts: 3,473
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I"m trying to do a back of the envelope calculation.
Max TDP of a GTX 560 ti 448 is 210 watts.
Ivy i5 non-overclocked is 77
Add in 80 watts for miscellaneous everything else: hard drives, fan, MB, mouse/kb
and that should be like 350. Max. Should be healthily within range.
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01-15-2013, 12:50 PM
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#4
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Platinum Member
Join Date: Dec 2006
Posts: 2,271
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Your PSU size is fine but the PSU itself may have just died. Not due to needing too much power but due to hardware malfunction.
__________________
Antec P182 | Seasonic X-660 | APC BR1000G UPS | Intel i5 2500k @4.2 w/ Corsair H60 |
ASUS Maximus IV Gene-Z | 16gb G.SKILL DDR3 1600 | ASUS GTX580 |
Sharp AQUOS LC-32LE700UN 32" LED HDTV | 1x 160 gb Intel G2 02HD |
1x 1TB Samsung F3 | Samsung SATA DVD Burner | Logitech Z-5500
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01-15-2013, 02:45 PM
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#5
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Lifer
Join Date: Aug 2001
Posts: 22,217
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That's what happened with my old HTPC. It ran 24/7, and once when the power went out, I had difficulty getting it to power on again. I replaced it around a month later with a new HTPC, and when put the old one on the test bench, I couldn't get it to power up no matter what I did. I decided that the PSU must have died. (I connected the mobo to a known-good PSU and it powered right up.) I have since re-built the old HTPC inside a new case+PSU, and it runs fine again.
__________________
Rig(s) not listed, because I change computers, like some people change their socks.
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01-15-2013, 03:51 PM
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#6
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Lifer
Join Date: Nov 2000
Location: NoVA
Posts: 15,794
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dont forget to test the outlet and power strip if you are using one
make sure all the connections outside and inside are tight
next swap PSU and try, could be mobo too if the LED you are talking about is ont eh board
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01-15-2013, 03:53 PM
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#7
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Diamond Member
Join Date: Jul 2001
Location: so-cal
Posts: 5,570
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Sounds like PSU to me... If its not the PSU, its the mobo.
Shouldnt be too hard to figure out. This is a reason many keep a cheap backup PSU on hand.
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01-15-2013, 05:51 PM
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#8
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Platinum Member
Join Date: Oct 2007
Location: West Lafayette, IN
Posts: 2,301
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+1 to testing the power strip
__________________
Silverstone SG07
Asrock Z77M ITX w/3770k
Asus HD7870 2GB
16GB DDR3 1866@ 2133mhz
Corsair 240gb GS
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01-15-2013, 06:06 PM
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#9
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Diamond Member
Join Date: Nov 2010
Posts: 3,473
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Okay, it works now.
What I did was unplug everything for a few hours.
Came back, plugged it in, and it works again.
Any ideas? I'm guessing something about the MB and a capacitor battery.
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01-17-2013, 01:58 AM
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#10
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Junior Member
Join Date: Jan 2013
Posts: 2
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Quote:
Originally Posted by karmypolitics
Okay, it works now.
What I did was unplug everything for a few hours.
Came back, plugged it in, and it works again.
Any ideas? I'm guessing something about the MB and a capacitor battery.
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If no LED was on (that is normally on):
Power outage.
Bad house wiring.
Bad connections.
Component-level malfunction.
You do not have a capacitor battery in your computer.
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