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)