Pc wont power up after replacing GPU & PSU

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Do206464

Honorable
Jan 13, 2014
10
0
10,510
I have just replaced my HD 7750 and an unnamed PSU for a Asus 760 and a Corsair ATX Builder 500 watt. I had some trouble connecting the 24 pin connector on the motherboard and I thought that was the problem but I think i fixed it. Everything seems wired up but when I go to power to PC on, the front lights light up for half a second, then go off, and nothing else happens. When the PC is turned on, a green light shows on the grphics card, so Im assuming it is connected, but honestly I dont know what to do. Any help will be appreciated
 
Solution
xSamaru
hmm seems familiar disconnect everything except DVI or VGA or HDMI to gpu and power to PSU..take out motherboard battery for one minute and then start the pc with just 1 RAM if it works turn off the pc but everything back and it will work normally..
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Do206464

Honorable
Jan 13, 2014
10
0
10,510
Thanks for all the answers but Id like to know why it works for a fraction of a second then shuts off, not doing that again until power is removed then turning it on again. Is something inside stopping it all?
 
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xSamaru

xSamaru

Reputable
May 20, 2014
504
2
5,065
hmm seems familiar disconnect everything except DVI or VGA or HDMI to gpu and power to PSU..take out motherboard battery for one minute and then start the pc with just 1 RAM if it works turn off the pc but everything back and it will work normally..
 
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Solution
xSamaru

xSamaru

Reputable
May 20, 2014
504
2
5,065


Yes it is but for some reason i had the same problem i tried resetting it with cmos switch it didnt work but when i did it with battery it worked.
 
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