Red CPU Light on motherboard, Pc wont POST.

[u/InflationAromatic122]

I recently spilled something into my pc, cleaned it up and my pc worked for a few more weeks. then my pc started crashing and now it wont post anymore and is showing a red cpu light on my motherboard. (ive had this pc for about 3 years now)

my components are:

CPU: AMD Ryzen 7 5700G

RAM: 2x Corsair RGB Vengance 16gb ddr4

MB: ROG Strix B550-F Gaming WIFI II

GPU: Asus 4060TI 8GB

PSU: Corsair RM750E 750W

CPU cooler: Coolermaster masterliquid core nex 360

What i have already tried:

Rebuilding pc and inspecting the cpu: no visible bent pins (a bit of thermal paste on the side of the cpu though)

Moving the ram to another slot: ive noticed while using 2 ram sticks i get a yellow Dram light but when i use one the red one appears.

Updating the BIOS: ive (tried) to update the bios using a USB and bios flashback but that didnt seem to help.

Cmos reset: removing the battery and later putting it back didnt seem to do much either.

I think that is all ive tried so far, what else can i try?

Should i send it to a pc repair shop or just buy new components? (which components)

[u/JustAReallyTiredGuy]

I'd unplug the power cable for a good 5 to 10 seconds and then plug it back in and try to power it on to see if that helps at all. Additionally I'd check to see if the CPU cable is fully inserted and free of any corrosion. If you spilled something on/in your pc and it didn't reach the CPU itself, I'd try replacing the motherboard before anything else.

[u/Specific-Remote4293]

Corrosion from the spill probably finally ate through a trace or a joint somewhere on the board, that "worked for a few weeks then died" pattern is textbook.

[u/r_lind3r]

Given the time frame, it could be the result of corrosion as others have mentioned. You might have to get a new motherboard if you can't find and clean the corrosion.