Asus motherboard A2 error

[dennis23]

I just came back from a 4 months trip and reassembled my PC (had to disassemble it before I left).
My motherboard is Asus X99a. Right now it can POST but the error LED shows the A2 error code. I've updated bios, removed ram, connect only OS SSD and gpu. Still having the error code. Any help would be greatly appreciated!

 

[ragnarok95]

A2 is displayed because it is halting on the overclock fail message. Try to update ur windows, do a proper shut down, remove any OC first.

 

[dennis23]

A2 is displayed because it is halting on the overclock fail message. Try to update ur windows, do a proper shut down, remove any OC first.

Thank you for the suggestion. In the end, I found out that it was because of a wrongly connected CPU fan connector I was afraid that there was moisture damage after 4 months unused.