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Computer wont boot up after installing new PSU

Last response: in Components
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October 27, 2013 3:19:23 PM

Hi all,
Recently I decided to upgrade my PC with a new video card (r9 280x). With that I needed a new psu. I went out and bought the thermaltake sp-850m. I hooked it up installed all the cables and now it won't boot up. So far what I've done is recheck all the connectors and took out the new video card but it still won't boot. It goes for about 10-15seconds and them there is a click and it shuts off. Does anyone know what this is and how to fix it?

I reinstalled the old PSU and it boots fine.

Thanks
October 27, 2013 3:36:04 PM

bad psu, it sounds like.
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October 27, 2013 3:57:59 PM

Alec Bramlett said:
What was the old PSU?

The old PSU is a 400w that came with stock with the computer (HPE 380t)
Also this is a brand new PSU.
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October 27, 2013 7:52:50 PM

Here are the specs on my machine

CPU
Intel Core i7 930 @ 2.80GHz
RAM
15.0GB Triple-Channel DDR3 @ 531MHz (7-7-7-20)
Motherboard
PEGATRON CORPORATION 2A86 (CPU 1) 103 °F
Graphics
2048MB ATI AMD Radeon HD 5570 (HP) 124 °F
Hard Drives
932GB Hitachi HDS721010CLA332 (SATA) 85 °F
60GB SanDisk SDSSDP064G (SSD)
Optical Drives
hp DVD-RAM GH60L
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