PC wont start when PSU plugged to GPU

icetee131

Commendable
Dec 29, 2016
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1,510
I bougth new Antec 550W modular PSU It came with 8 Pin PCI E connector and my GPU has only 6 Pin power connector i can fit 8 pin to go on the gpu but then pc wont start at all all i can hear is little some kinda of electric shock but pc wont start i have tried to make 6 pin wire to it but it doesnt work.
with out PCIe plugged in pc starts fine...
Please Help!
 
Solution


Doesn't the Antec Neo HE550 only come with two modular cables that each have one 75-Watt 6-pin PCI Express supplementary power connector on them? The connector with PCI-E labeled on it is supposed to be plugged into the graphics card while the unlabeled end is suppose to be plugged into the PSU's modular connector panel.

That (4+4)-pin hardwired connector is strictly for the CPU.

PaulBlack

Commendable
Dec 28, 2016
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there 3 yellow wires going into the 8 pin and the rest are black, when you put it in a 6 pin, which you can do, make sure the 3 yellow ones are in the 3 sockets and the 2 pins sticking out the end not being used are the two black ones and it should work. so assuming you got that wrong once it shouldnt be that bad tbh.

http://www.playtool.com/pages/psuconnectors/connectors.html#pciexpress8 look at that on both 8 and 6+2 pcie to get your head round where you should be plugging it in and try it when its defo in the right place and see if its still broken. i dont know the consequences of grounding a 12v rail would be on the PSU tbh. have you totally unplugged it at both ends and let it do nothing for a few minutes and started again ? its pretty good it should have protection for this stuff. aslong as nothing blow up you should be fine
 

icetee131

Commendable
Dec 29, 2016
8
0
1,510




There are 4 black wires 2 yellow/blue and 2 yellow/black which of them should be in socket?
 

PaulBlack

Commendable
Dec 28, 2016
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i have a horrible feeling you are not putting the 8 pin pCIE in it but the 8 pin EPS which is the one that goes in the motherboard not the graphics. That PSU has a 6+2 according to the sites i looked on.
""Connectors
1 x 4+4pin CPU +12V
5 x 4pin Molex
2 x 6+2pin PCI-E Power
1 x FDD Power
6 x SATA Power""

are you sure you are not putting the 4+4 CPU power in the gpu ?

ive searched and found differing version now with slightly different setups
 


Doesn't the Antec Neo HE550 only come with two modular cables that each have one 75-Watt 6-pin PCI Express supplementary power connector on them? The connector with PCI-E labeled on it is supposed to be plugged into the graphics card while the unlabeled end is suppose to be plugged into the PSU's modular connector panel.

That (4+4)-pin hardwired connector is strictly for the CPU.
 
Solution