FX-8350 Boot Issue

[spammyyammy1]

Hello,

I have an issue. My motherboard is a Crosshair Formula V updated to the latest version.

I have installed a FX-8350 with 2 sticks of Vegeance DDR3 1600mhz ram.

When I booted, it wouldn't detect the ram, I know the ram works as I tried with my old outdate processor.

This issue only happened with the FX-8350 when I was using a 3pin cooler, but it works when I used the stock heatsink which is four pin.

Does this mean I can only use a four pin cooler?

Thanks

[lewybear]

Could you tell us a little more like your actual build, psu, ram serial number cooler etc
Thanks

[SaLSouL]

have you plugged 8 pins into the motherboard CPU power socket or just 4 ?

[lewybear]

Also have you cleared CMOS properly incase there's any ram specific settings on the old sticks still there?

[spammyyammy1]

Hi, I definitely tried clearing the CMOS, even removed the battery.

I have 8pin plugged into the motherboard, but I have left the other 4pins free as I don't have another wire for these extra four.

My ram serial is: CMZ8GX3M2A1600C9B

And Im running a 550w Corsair PSU with a HD 5750 card and a couple of hard drives.

Thanks

[Chino]

What is the name of your 3 pin cooler?

[spammyyammy1]

It was a Corsair H40.

I know it's not great but managed to keep my previous stuff alot cooler than stock coolers.

This cooler worked on this motherboard with the previous CPU I was using (Athlon x4 II 620). As soon as I changed the cooler on this, the pc booted. I tried resitting everything, testing each bit one by one with no luck.

[Chino]

When you were using the H40 with the FX8350 and you turned on your system, did you verify to see if the fan and pump was working?

[lewybear]

You haven't got the cpu header set for PWM in bios have you? Instead of DC, try it on an opt or chassis fan header see if that helps aswell.

[spammyyammy1]

Chino - I was using it for the FX8350. I can't confirm it was working with that, but I was using it an hour earlier on the other processor which was fine.

Lewybear - I have no idea, I'll check in a second in teh bios, what setting should it be on?

Would this error be enough to give me a ram error? A ram error seems very unrelated to a CPU fan.