Hi all, cleaned my motherboard yesterday, and now it doesn't turn on? Maybe I didn't wet the solder joints enough. Can anyone advise?

I used hot soap and cold water, to keep the electronics from warming up too much. I did start using a chisel to remove some of the annoying varnish too but that ended up being annoying. Feel like I'm a bit lost here, is this normal?

I used hot soap and cold water, to keep the electronics from warming up too much. I did start using a chisel to remove some of the annoying varnish too but that ended up being annoying. Feel like I'm a bit lost here, is this normal?