QCode 4f Check CPU & Code 3B

[NicktheMessiah1]

Hi guys I am running an Asus x299 Prime Deluxe motherboard with the Intel Core I9 7900X. Titan XP collectors edition GPU and G skill 32 GB quad channel DDR4.

When I plug in the system and try to turn it on the first time it will turn on and 10 seconds later shut off and continually repeat this. then i flip the switch in the back and try to start up again and it will turn on normal but nothing will display on the screen. the motherboard says QCode 4F Check CPU and the manual says PXE IDL is started. So I went in and removed the CMOS battery and reseated the ram and gpu. starting up I got a new code 3B. Now it is back to the code 4f, and I have no idea what else to try.

[DildorTheDecent]

24 minutes ago, NicktheMessiah1 said:

 

I have a feeling that it might be memory related. Don't know why you're removing the battery whenever there's a clear CMOS button.

 

I'd try clearing the CMOS first (via the button). Then if it gets stuck on a code, hit the MemOK! button. After that, enter the BIOS (advanced mode) and check the memory settings. If it's at JEDEC (2133/2400HMz) use the XMP profile that's assigned to the RAM. If it's at XMP, try and boot. If that XMP profile fails, increase VCCSA sightly. If that fails then input XMP settings manually and adjust memory current capability and the supply voltage (which should be half the memory voltage iirc).

 

Other things you can do is make sure that BCLK is set at 100MHz. And CPU is at stock clocks to make sure it isn't causing instability.

 

Should all that fail then just update the BIOS. Or return memory and get a kit that works.