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New PSU now Computer won't turn on

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June 12, 2013 7:40:19 PM

I just bought a new Graphics Card (XFX 7770) my PSU was crappy so I got a new one to support the new GPU. I installed both PSU and GPU. Now computer wont turn on. I press the power button and nothing happens at all. I checked the I/O switch, checked to make sure main connector was tight and 4-pin CPU. All connections are good. I tried removing the 7770; still no luck. So I put back my old PSU and everything works fine. (Well except the GPU, because it doesn't have a 6-pin connector.)
What could be the problem? Any help is appreciated
Specs:
MB: Asus F1A75-M
CPU: AMD A8-3870
GPU: XFX 7770
PSU: LEPA N500-SA

More about : psu computer turn

June 12, 2013 8:31:04 PM

DeeJaaY209 said:
I just bought a new Graphics Card (XFX 7770) my PSU was crappy so I got a new one to support the new GPU. I installed both PSU and GPU. Now computer wont turn on. I press the power button and nothing happens at all. I checked the I/O switch, checked to make sure main connector was tight and 4-pin CPU. All connections are good. I tried removing the 7770; still no luck. So I put back my old PSU and everything works fine. (Well except the GPU, because it doesn't have a 6-pin connector.)
What could be the problem? Any help is appreciated
Specs:
MB: Asus F1A75-M
CPU: AMD A8-3870
GPU: XFX 7770
PSU: LEPA N500-SA


Here's a link for steps to check if it's dead: http://www.computer-how-to-guide.com/power-supply-troub.... If it is dead then I would send it back and get a new one.(probably under warranty).
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January 25, 2014 1:56:12 PM

Hi. I know this thread is old, but I am having the same problem.

I went through this: http://www.tomshardware.com/forum/261145-31-perform-ste... and nothing worked. This is my second Corsair CX500 and it starts fine using a paperclip.

MZN68-LA
amd athlon 64 x2 6000
1x1gb pc-3200
1 dvd drive
1 500gb hdd
no mobo indicator light
tried with and without GTX560

Out of ideas and very frustrated. Help!!!!
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January 25, 2014 2:38:15 PM

Got this working! Msg if you need help with this.
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May 10, 2014 6:23:04 PM

BNeal said:
Hi. I know this thread is old, but I am having the same problem.

I went through this: http://www.tomshardware.com/forum/261145-31-perform-ste... and nothing worked. This is my second Corsair CX500 and it starts fine using a paperclip.

MZN68-LA
amd athlon 64 x2 6000
1x1gb pc-3200
1 dvd drive
1 500gb hdd
no mobo indicator light
tried with and without GTX560

Out of ideas and very frustrated. Help!!!!

I'm having this same exact problem hw did you fix/
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May 10, 2014 7:32:33 PM

See that it's an 8 pin connector you're plugging into a 4 pin slot. It matters which way you plug that in. Let me know how it goes.
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