Notebook not turning on, after water dmg

Soak the board in 91-99% IPA and pray that it isn’t in need of a new motherboard. Your friend may have signed this machines death certificate by not cleaning it. Seeing as it no longer works and you do not know, assume it is acidic and clean accordingly. You’ll also need a new palmrest if that keyboard is plastic welded in - if not, reference the keyboard P/N.

However, I will tell you this: Yank that hard drive if it has issues booting after cleaning the motherboard. A lot of the time, these Asus laptops do not like to boot if the drive has issues, and Toshiba drives like to fail within 1-2 years, or 2-3 with light usage; you do not know how heavily that drive was used unless you can check the POH with a tool that polls the SMART data. If that doesn’t work, you can always try to remove the CMOS battery but once you get that low with water damage the device is generally done for.