Question Debug lights are on

[netsonicyxf]

The computer was built about 7 yrs ago and it has been running well until yesterday.

There was nothing on the screen. Then I rebooted several times, i noticed the cpu debug light was on for less than 1 sec, then off. Then the vga debug lights was on for a few sec, then off. At last the boot debug light was on for a few sec, then off. Sometimes dram debug light was on for secs then off.

Today i tested the gpu on anther computer, it worked. Today only the dram debug light was on. I also tried the "MemOk" button on the Asus mb, but it didn't help.

CPU：i7-8700k
CPU cooler：Noctua NH-U14S
MB：ASUS Prime Z370-A
Ram：Crucial Ballistix Sport LT 32GB Kit (8GBx4) DDR4 2666 MT/s PC4-21300
GPU: Gigabytes GV-N970IXOC-4GD
SSD: 4
Hdd: 2 SATA
PS: Antec Earthwatts 500W
CASE: Antec P180

 

[Lutfij]

Today only the dram debug light was on.
You could try and swap slots for your ram or work with individual sticks of ram. Conversely, you might want to try and drop your ram onto another known working motherboard to see if they are exhibiting the same issue.

You might want to source(borrow, not buy) a reliably built PSU with 550W of power at the entire system's disposal and see if the issue persists.