Gaming 7 revision 1.0 z170x- Error Led Code C1

[furkan1992]

Hello, I using this motherboard for 2 months long. Rarely computer don't start when i press power up button and I pressed long when this happened, reset the computer and it was worked without problem everytime. Today I tried to open computer but it didn't. Tried to reset but still it dont. When I check the led it writes C1. I checked up user manual and c0~cf: reserved it writes. Can anyone help me please? I couldn't open computer no screen and c1 at led.

I pressed 2 buttons up back on the led screen 1 of them writes reset-sw other writes cmos-sw. I pressed both of them and tried to open computer again, it worked fine now screen writes only A0. I'm afraid that can happen again, what should I do about that problem?

[shadowsports]

This is usually a memory detection error. 

I would:

Ensure the memory you are using is on the QVL for the board
Try XMP profile 1 if not tried previously
Remove memory, inspect the slots for bent contacts and clean with compressed air.  Also ensure contacts on DIMMs are clean and free of any debris.
Pull MB battery and set BIOS up from scratch

Other areas to consider:

Bent pins in CPU socket
Weak or failing PSU

[smallshot]

This is usually a memory detection error. 

Thanks shadowsports! I had the same problem as OP. I have a Z270X gaming 7 and the manual still says codes C0-CF are "reserved," but in my case you were right, one of my sticks of RAM was bad

[shadowsports]

Glad it helped you figure things out.