New PSU and PC not turning on

[Flippern]

I bought a new PSU (Corsair RM850x, 850 W) and i’ve connected all the cables (at least i thinks so). I connected to the CPU, one/two to the GPU, one to my Hard drive, and one to my motherboard (the big one). When i plug in the socket into the pc, the lighting off the ethernet cable lights up (so there is some power), but when i go to turn it on, there is a little noise, like the power just went, and nothing happens.

How can i fix it so my PC turns on?  

[Middcore]

Did you use the new PSU's cables or the cables from your previous unit?

[Flippern]

1 minute ago, Middcore said:

Did you use the new PSU's cables or the cables from your previous unit?

Im using all new except the one that goes to the GPU

[Middcore]

Just now, Flippern said:

Im using all new except the one that goes to the GPU

Wrong. Use ALL new. Never mix cables between PSU's (unless they are the same platform).

 

[Flippern]

2 minutes ago, Middcore said:

Wrong. Use ALL new. Never mix cables between PSU's (unless they are the same platform).

 

Ok, ill try that, thanks

[Quackers101]

also spec? what mobo? (b550, z490 etc) and cpu?

Could be power issue or hardware problem, or an BIOS update might help with some port issues etc. (depends on what you use).

Also that the cables are good and not connected wrong or fried anything.

[Flippern]

37 minutes ago, Quackers101 said:

also spec? what mobo? (b550, z490 etc) and cpu?

Could be power issue or hardware problem, or an BIOS update might help with some port issues etc. (depends on what you use).

Also that the cables are good and not connected wrong or fried 

 

47 minutes ago, Flippern said:

Ok, ill try that, thanks

 

Edited July 26, 2021 by Flippern

[Flippern]

50 minutes ago, Middcore said:

Wrong. Use ALL new. Never mix cables between PSU's (unless they are the same platform).

 

Ok, now i’ve changed the cables to the same as the PSU im using now, but now, my PC turns on then off, then on , and repeat, or it looks like it is resetting it selft all the time…

[Flippern]

38 minutes ago, Quackers101 said:

also spec? what mobo? (b550, z490 etc) and cpu?

Could be power issue or hardware problem, or an BIOS update might help with some port issues etc. (depends on what you use).

Also that the cables are good and not connected wrong or fried anything.

I found my initial problem (which was i was using old cables from the previous PSU). Now i’ve changed the cables to the same as the PSU im using now, but now, my PC turns on then off, then on , and repeat, or it looks like it is resetting it selft all the time…

[Middcore]

15 minutes ago, Flippern said:

I found my initial problem (which was i was using old cables from the previous PSU). Now i’ve changed the cables to the same as the PSU im using now, but now, my PC turns on then off, then on , and repeat, or it looks like it is resetting it selft all the time…

 

Do you have another GPU to test with, or does your CPU have integrated graphics? 

[Flippern]

13 minutes ago, Middcore said:

 

Do you have another GPU to test with, or does your CPU have integrated graphics? 

I kinda sorted this out too, i just had to restart my pc then it worked fine again.

 

thanks for the help!