No post, no bios. Sudden crash. Boot loop.

[TheNaitsyrk]

Hiho,

Two days ago I tried booting the PC and I couldn't. I turned it off normally using the PC button and then after trying to turn it on again, it wouldn't boot at all.

First, it had boot loop error LEDS 32, 36, and 32.

Then I took everything apart, but I kept the mobo in the case.

Reattached everything and I still had the boot loop. Then I tried resetting the CMOS with the screw driver (2pins) and the button. It didn't work.

I tried removing the battery as well and nothing. I have BIOS reset button but it didn't work, it just loaded the same problem A9 error.

I tried reseating the CPU, taking it out, reapplying thermal paste, loosening the screws on the water cooling.

I tried switching the BIOS on my motherboard with the little leaver. That didn't work.

I tried switching RAM (I have 4x 8GB) but nothing worked.

All fans are on, everything works but it doesn't boot. No signs of burned CPU etc. As I checked.

I contacted Intel and they suggested that I send the CPU back.

I unplugged all the SSDS and Hard drives in my PC but that didn't help.

The CPU was overclocked to 4.8Ghz at the time 1.295V and it was stable for months.

I'm using onboard graphics (Intel HD4600).

For some strange reason, I was unabe to get to the BIOS once I sold my GPU cards. I kept pressing del at startup but it never got into BIOS when the PC was actually working.

I tried pressing DEL F2 F5 F8 F10 F11 F12 to try to boot into BIOS while it was booting to A9 error but nothing. If I plugged in a mouse or something, it would say b4 error as far as I remember. I own K70 RGB LUX keyboard and the wireless one didn't work at all.

Any ideas how to try to fix this issue?

PC:
CPU: i7 4790k
Motherboard: GA-Z87X OC FORCE
RAM: 4 x 8GB Corsair Vengeance PRO 2400Mhz
512GB Samsung 850 SSD
120GB Kingston V300 SSD
2TB Seagrave HDD







Update!
I can see BIOS screen for 0.5 seconds, then I see underscore in the top left corner of the screen. Then the PC restarts itself. Error codes I see: A9, Ab, db.

A person at a computer shop told me that it could be power supply? Is that correct? Everything spins and works just like before but it doesn't boot.

 

[ingtar33]

my first guess would be Powersupply is dead
my second would be dead motherboard
and third would be dead CPU

Personally I think the highest chance is a dead psu.

 

[TheNaitsyrk]

I hope it's dead power supply. I can RMA it. I already sent the processor back so Intel can test it. Then, if PSU and CPU are good then I'll try to RMA the motherboard.