q code - AF no boot

Associate
Joined
2 May 2016
Posts
4
Corsair CS850M 850W Semi-Modular 80+ GOLD Certified Power Supply (CP-9020086-UK)
CA-192-CS
1
£95.79*
£95.79*

Intel i7-5820K 3.30GHz (Haswell-E) Socket LGA2011-V3 Processor - Retail (BX80648I75820K)
CP-546-IN
1
£279.99*
£279.99*

Corsair Vengeance LPX 16GB (2x8GB) DDR4 PC4-25600C16 3200MHz Dual Channel Kit - Red (CMK16GX4M2B3200
MY-455-CS
1
£79.16*
£79.16*

Asus Rampage V Extreme USB 3.1 Intel X99 (Socket 2011) DDR4 EATX Motherboard
MB-640-AS
1
£312.49*
£312.49*

Corsair Hydro Series H115i Extreme Performance Liquid CPU Cooler (CW-9060027-WW)
HS-035-CS
1
£91.66*
£91.66*

Corsair Obsidian 750D Airflow Full Tower Case - Black (CC-9011078-WW)
CA-207-CS
1
£120.79*
£120.79*

Samsung 950 Pro 256GB M.2 PCI-e 3.0 x 4 NVMe Solid State Drive
HD-215-SA
1
£116.66*
£116.66*

this is what i bought about 3 weeks ago.

It has booted many times in fact it was running quite nicely... however after turning off for the evening and then coming back to the pc the next day.. it would have some serious issues booting.

I would see q code AF about 1 second into the boot.

since then i have changed the graphics card and RAM.

I have tried changing cables from the display.. different monitors.

The only things i havent tried swapping are the SSD m2 HD - which i dont think is the problem

The cpu and the motherboard. However i cannot test these myself :S

When the q code AF comes up the CPU led is still on and also the BIOS led is still on the motherboard.

But i still have this problem

Sometimes it boots and runs fine... then the next time it wont boot and will take me 20 minutes to fix it.. and i dont think i do fix it... it just seems to fix itself on several attempts to reboot..

Very strange but if anyone can help that would be much appreciated.

I have seen on some other places that people think the CPU might be faulty?

Would like a second opinion!

Thanks

Luke
 
Any overclocks on it we should know about?

1. Try a different PSU/Modular connection on same PSU
2. Test removing all but 1 RAM stick and try all slots if it still fails
3. Check the CPU, did you bend any pins out of shape (will require you to remove it of course)
4. Try the board outside the case on its box and leave internals as is, in case there is a short with the case
 
unfortunately i have tried all of these :( the only thing i can think of now is the mobo being bad or the cpu being bad, how can i possibly identify the failure on either of these without buying a new processor? or a new mobo....
 
what i have noticed is that on this motherboard, on the front the BLK isn't being 'read' on boot.... this would point me towards the processor imo?

But the rma process of an intel processor is ridiculous isn't it?
 
Does it stay on AF code? AF means successful boot

We're you on the latest BIOS? Done overnight CMOS battery removal?

Could be a cold boot issue which is usually ram related or poor BIOS support for that make/model of ram
 
Back
Top Bottom