ASRock B85 DGS Motherboard + Intel I3 4170 won't power up

Garreth

Reputable
Dec 3, 2015
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I'm putting together a gaming rig. All parts brand new. I installed everything and went to power on. PSU fan spins for a second and then stops.

I stripped back to bare bones with only CPU on the motherboard. Same behaviour.

Tested PSU with paperclip and it runs fine. Removed the motherboard from the chassis in case something is shorting it and its still not working.

The board is an ASRock B85 GDS, which has the LGA 1150 socket that takes the Intel I3-4170 CPU. I've picked these parts from PC Part Picker as an established and stable gaming build.

So conclusions:

Its not the PSU (Corsair 500W)
Its not a compatibility issue between the CPU and Board

From what I can see, the motherboard/CPU is sending a fail signal that prevents the current from continuing. I've tried re-seating the CPU every which way but nothing seems to work.

Really desperate here. Bought this as a gaming rig for my 10 year son, and he's looking at me like I haven't the faintest idea what I'm doing (even though I work in IT). Please help.

Note, I keep seeing references to ensuring CPU power in plugged in, but my CPU doesn't have separate power. It came with a heat sync and fan which I've installed and plugged into the board.

Update:

I've checked BIOS version compatibility here:

http://www.cpu-upgrade.com/mb-ASRock/B85M-DGS.html#cs

Which states that I need Version 1.30 from Feb 2015 for i3 4170 support.

I guess the only way to find out what version I have is to find a compatible CPU and boot to BIOS?

Update 2:

Just found a dirty great "1.20" sticker on my BIOS chip. What a gip! Now I'm going to have to find a compatible CPU somewhere to upgrade the BIOS!
 
Solution
"Now I'm going to have to find a compatible CPU somewhere to upgrade the BIOS!"

Indeed you are. I had a hunch it needed a BIOS update as soon as I started to read your post and the symptoms you described.

Just because a particular board and CPU are compatible doesn't necessarily mean the existing BIOS version is compatible too.
"Now I'm going to have to find a compatible CPU somewhere to upgrade the BIOS!"

Indeed you are. I had a hunch it needed a BIOS update as soon as I started to read your post and the symptoms you described.

Just because a particular board and CPU are compatible doesn't necessarily mean the existing BIOS version is compatible too.
 
Solution