New PSU wont POST

[mazymony]

Hey guys/girls just can't find a solution to my problem: New PSU doesn't POST but on the odd occasion it does and boots to desktop...for like 2 minutes then it shut downs. Thinking the new PSU was at fault, I tried my old PSU and now that doesn't boot at all. I've tried swapping out the the 660 with an old 460 I have but the results are pretty much the same. I've got a feeling that the Corsair was DOA and has broken something whenever I turned it on as whenever the system shut downs a loud click comes from the Corsair PSU. Any advise would be appreciated.

Old PSU: Antec HCG520
New PSU: Corsair RM750

System Config-
CPU: AMD FX 8350 stock
GPU: GTX 660
RAM: 8GB (4GB*2)
Motherboard: ASUS M5A97 R2.0
Sound Card: ASUS XONAR DG
Satellite Card: Generic 2 feed DVB-S2
Drives: 128GB Kingston SSD
3TB WD Green
2TB Seagate (low RPM)
Samsung 5.25" DVD Drive
Monitor: Samsung 32" 1080p TV

 

[bgray96]

Could be many things.

Did your apply the Thermal paste to the CPU?

 

[mazymony]

Could be many things.

Did your apply the Thermal paste to the CPU?

Thermals for everything was okay, including the the CPU before the new PSU.

 

[tiny voices]

You replaced a high quality PSU with a poor quality one made with junk parts.

http://www.hardocp.com/article/2013/11/13/corsair_rm750_750w_power_supply_review/9#.VW-Cwoyg2Uk

Use the Antec, it is a MUCH better unit.

 

[bgray96]

Sounds like a motherboard or memory issue now.

 

[mazymony]

You replaced a high quality PSU with a poor quality one made with junk parts.

http://www.hardocp.com/article/2013/11/13/corsair_rm750_750w_power_supply_review/9#.VW-Cwoyg2Uk

Use the Antec, it is a MUCH better unit.

I knew about the issues associated with the PSU but I was going to upgrade to a R9 290X and I thought that my Antec wasn't enough, but yeah it looks like it has <mod edit> my motherboard and I'll have to buy another motherboard...

 

[tiny voices]

Return the RM750 and buy a proper quality PSU.

Antec, XFX, Seasonic, EVGA (G2,B2) 650w or more.

 

[mazymony]

Return the RM750 and buy a proper quality PSU.

Antec, XFX, Seasonic, EVGA (G2,B2) 650w or more.

Thanks for the quick reply, I will do cheers mate. Damn Corsair!

 

[tiny voices]

Yeah, I generally recommend staying away form Corsair PSUs. They have some great ones, but they have ALOT of junk ones too.

 

[mazymony]

Yeah, I generally recommend staying away form Corsair PSUs. They have some great ones, but they have ALOT of junk ones too.

Do you think it has wrecked my motherboard? Sorry if that's a quite generic question.

 

[tiny voices]

It is possible. A bad PSU can fry anything in a PC. It it probably not super likely, but it's definitely possible.

RAM could be toast.

Using the Antec, and the gtx660, try to get it to boot using each RAM stick individually.