HELP! serious pc problem!

BabissGr

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Sep 16, 2013
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Hello guys, I am building a new pc and finaly today got the last component, the cpu. So I placed my new motherboard on the new case, my old graphic card my old power supply my old hard drive my new rams and the new cpu with a cooler.I connected everything of front panel buttons and the moment I try to power on the system, nothing happens...

Possible erros causing that:
1)As my psu is old without much pins and the new motherboards atx has 24 pins I used 20+4 pins
and on the atx_12v_2x4 which is 8pin I used a 6-pin one.
2) Maybe I placed the front panels cables wrong but I dont think I did.
3)Something else...

Please help me guys I have spent all my budgets on that components just to see it doesnt work...
 
Solution
For the 20+4 pin are you using separate connectors? You should have a cable with either 20 pins or 24 pins, 4 of which can be detached. If you're using separate connectors, don't do this.
I'm not sure if you can use a 20 pin connector for a 24 pin motherboard, and I'm also not sure if you can use a 4 pin cpu connector with a motherboard that has an 8 pin cpu power connector.

If I were you, I'd just get a new psu if you don't have the right connectors

BabissGr

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Sep 16, 2013
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Yeah I noticed it when I was typing the question :p. If I use just the 20 pin on 24 pin atx and the 4 pin on the 2x4 12_V atx 8pin, till I get a new psu or adapters for pins, will it work or there is big risk damage anything?
Thanks for your time!
 

Mattib 050

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Nov 24, 2013
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For the 20+4 pin are you using separate connectors? You should have a cable with either 20 pins or 24 pins, 4 of which can be detached. If you're using separate connectors, don't do this.
I'm not sure if you can use a 20 pin connector for a 24 pin motherboard, and I'm also not sure if you can use a 4 pin cpu connector with a motherboard that has an 8 pin cpu power connector.

If I were you, I'd just get a new psu if you don't have the right connectors
 
Solution

BabissGr

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Sep 16, 2013
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Thanks for Info !
I''ll try to get a new psu soon

If anyone else knows more about the 20 pin on 24 pin and 4 pin to 8 please let me know..
 

BabissGr

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Sep 16, 2013
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oh the atx connector is 20+4 together as you said so It should work right.I put the 6 pin on vga and I have one 4 pin left for the cpu which I propably have to use an adapter to make it 8pin