New 6600k build wont boot.

seanyc5 · 12 Aug 2015 at 20:25

Hi,

Ive just swapped out the guts of my pc with

i5-6600K 3.9GHz (Skylake) Socket LGA1151

MSI Z170A Gaming Pro Intel Z170 (Socket 1151) DDR4 ATX Motherboard

Kingston Fury Black 16GB (2x8GB) DDR4 PC4-21300C15 2666MHz Dual Channel.

When I try to turn it on the board lights up and cuts of and the fans spin up for a split second and this repeats until I turn it off.

There are three LEDS on the board label CPU RAM and another. The CPU LED is blinking during this proccess.

I suspect and hope its because the mobo has a 8pin CPU connector and my PSU only has a 4pin one. Im sure ive seen this before though and it still worked! (just checked old mobo that was also 8pin and ran on four pin)

Ive tried one stick off RAM and a reseat to no avail.

If it is the CPU needing an 8pin is there an adaptor I can get or does it need the additional power from the PSU?

Hope you can help
Thanks,
Sean

Lemin · 12 Aug 2015 at 20:40

YOUR BASKET
1 x Akasa 4 pin to 8 pin ATX PSU adapter cable (AK-CBPW10-15BK) £2.88
Total : £2.88 (includes shipping : Ex.VAT).

Is your psu good enough ?

RJC · 12 Aug 2015 at 20:45

What is your PSU make and model?, but the CPU will need at least a 4 pin connector.

seanyc5 · 12 Aug 2015 at 20:46

Lemin said:
YOUR BASKET
1 x Akasa 4 pin to 8 pin ATX PSU adapter cable (AK-CBPW10-15BK) £2.88
Total : £2.88 (includes shipping : Ex.VAT).

Is your psu good enough ?

Its a 500w OCZ. Yeah I know you can get that adapter but obviously its still only giving the same power as a 4pin, it should run on a 4 pin. Ive googled and found a guy with the same problem and it ended it being a bent pin on the mobo! Hope its not that I really do.

RJC · 12 Aug 2015 at 20:47

Before rechecking the CPU socket, try a CMOS reset.

Are you sure your PSU does not have a 8 pin

seanyc5 · 12 Aug 2015 at 20:55

RJC said:
Before rechecking the CPU socket, try a CMOS reset.

Are you sure your PSU does not have a 8 pin

Yeah im sure. Ive tried a CMOS reset that made no difference either, im going to have to pull the CPU. Should be ok as its NZXT water one so easy access with rad mounted out the way.

seanyc5 · 12 Aug 2015 at 21:15

Right I pulled the CPU, It all looks fine that I can see. Apparently the pins are slightly angled so that when you clamp the CPU it makes a good contact.

Anyway screwed heatsink back down and still the same!

seanyc5 · 12 Aug 2015 at 21:26

Ive also just tried unplugging the 24 ATX and shorting the green wire (psu_on) with an earth and the fans on the GFX card spun but nothing else??

theforce · 13 Aug 2015 at 01:03

It should work with a single 4-pin connector. Don't you have a PSU you can borrow from a friend?

wazza300 · 13 Aug 2015 at 01:18

Yep should run fine with just a 4pin CPU power plug

Could try loosening CPU cooler ever so slightly,see if that helps,maybe quarter turn undone on each screw,could also be PSU incompatibility

seanyc5 · 13 Aug 2015 at 12:31

Most of my mates don't even have a laptop haha they all just use ipads. I'll try loosening the CPU cooler when I get back from work. I think I'll have to take it to a PC near me hopefully they will plug a power supply in and see if it boots to rule that out!

Thanks,
Sean

seanyc5 · 13 Aug 2015 at 19:02

Right so I tried to slacken CPU cooler and made no difference.

So I then plugged my old mobo/cpu/ram in with just 24pin and 4pin connected and GFX and it all power up as normal although didnt post/boot just hangs.

So as a last resort I pulled the new system out the cased and placed it on the motherboard box with nothing connected (apart from m.2 drive) plugged hdmi into built in, one stick of RAM. Still the same issue flashing CPU LED and its like it gets power then resets constantly.

Where do I go from here? I would assume its the CPU at fault but thats only because the mobo says so haha.

Any more ideas?

Thanks,
Sean

OracIe · 13 Aug 2015 at 19:10

What does the manual of the mobo say in relation to the LED flashing?

Leebone · 13 Aug 2015 at 19:12

Pull out all the ram except for one stick? Recently had a similar problem

wazza300 · 13 Aug 2015 at 19:19

post some close up pics of the whole cpu socket/pins its either that or psu problem

seanyc5 · 13 Aug 2015 at 19:55

I realise most if not all of these are terrible haha http://postimg.org/gallery/hcy7lz1k/ The shot of the system I took this morning its now on the mobo box as stated above.

Ive just googled for images too and mine looks no different to them I even tried to scan left to right at each pin and couldnt spot anything that stood out.

http://thumbs.dreamstime.com/z/modern-cpu-socket-20852569.jpg

Thats off google and mine looks much the same as that.

Thanks again,
Sean

wazza300 · 13 Aug 2015 at 19:59

yh socket looks fine from what I can tell

next would be to try and borrow a spare psu to test with,other than that idk,but my money would have been on one of those two things

seanyc5 · 13 Aug 2015 at 20:04

wazza300 said:
yh socket looks fine from what I can tell

next would be to try and borrow a spare psu to test with,other than that idk,but my money would have been on one of those two things

Ill have to take it too a local pc shop im sure they will plug in a PSU for me to rule it out. If it still does not work then I suppose I would have to RMA the CPU? Although I did read someone else had a simila thing and it was a bent pin in the end. Mobo manual says - CPU not detected or fail .

Thanks,
Sean

wazza300 · 13 Aug 2015 at 20:08

yh its either a power issue,cpu isn't receiving enough juice or a bent pin in the socket,same thing really as the pins wont be making proper contact with the tiny pads on the underside of the cpu

seanyc5 · 13 Aug 2015 at 20:11

wazza300 said:
yh its either a power issue,cpu isn't receiving enough juice or a bent pin in the socket,same thing really as the pins wont be making proper contact with the tiny pads on the underside of the cpu

Ok thanks a lot. I take CPUs pretty much never DOA then?

Thanks again,
Sean