Motherboard or cpu issue ?

darket · 6 Nov 2013 at 00:10

Right , my HTPC build gear arrived today , went with a MSI 970A G46 , 8 gig Xms 3, 500w OCZ modular PSU and a B-Grade FX 8350.

Started with the basics, installed the board , mem , Cpu and power supply and went to power up to check everything.

Fans/lights powered up then instantly went off.

Checked everything again to make sure everything was seated and correct.

Fans/lights powered up then instantly went off.

However if i unplug the 12v 6 pin connector the board powers up fine.

I'm at a bit of a loss really

Any help would be appreciated

Idleman · 6 Nov 2013 at 00:28

You should be plugging in the 8-Pin EPS Connector into the Cpu power port, sounds like you are using a PCI-E connector.

darket · 6 Nov 2013 at 00:31

sorry , my bad , i ment the 8 pin, its late and i'm tired lol

Idleman · 6 Nov 2013 at 00:36

darket said:
sorry , my bad , i ment the 8 pin, its late and i'm tired lol

Fair enough.

Any red lights flashing before it turns off?

darket · 6 Nov 2013 at 00:53

no nothing, however i *think* i may have found the problem, I tried the 4 pin atx cable and this has the same effect , however i just tried a cheap psu that i had hanging around , this however only has a single 4 pin cpu power line and requires a splitter but with that plugged in the board powers up and the 4 cpu phase led's light up, however as i dont have a splitter its hardly conclusive but i think its pointing towards an iffy psu.

darket · 6 Nov 2013 at 02:33

Is it possible to have a faulty 12v ATX plug on both the 4 and 8 pin plugs ? , the system is fine now with the cheap spare psu but wont do anything with the OCZ one

Steveocee · 6 Nov 2013 at 05:57

darket said:
Is it possible to have a faulty 12v ATX plug on both the 4 and 8 pin plugs ? , the system is fine now with the cheap spare psu but wont do anything with the OCZ one

I think youve answered your question. If the PSU wont fire it up then the PSU is to blame. I don't see the need for pinning down "exactly" which bit of it unless you want to really help the guys doing the RMA.

pastymuncher · 6 Nov 2013 at 10:06

Don't use it with a cheap psu or you may end up regretting it. 8350's can draw a lot of power and might prove to be too much for a cheap psu. Wait until you get a replacement.

Idleman · 6 Nov 2013 at 10:48

RMA the OCZ and get the Antec 520W, better quality Psu.

darket · 6 Nov 2013 at 12:11

pastymuncher said:
Don't use it with a cheap psu or you may end up regretting it. 8350's can draw a lot of power and might prove to be too much for a cheap psu. Wait until you get a replacement.

Idleman said:
RMA the OCZ and get the Antec 520W, better quality Psu.

Went with a corsair in the end but thanks for the advice, and yeah i like to know why things break not only that their broken lol