Have the motherboard seller show you it working. They'll have to get you a good one. Remember that we can't use the CPU or much else after such has begun to corrode parts. That is, RAM, CPU, keyboard, everything is now suspect.
Spilt a beer on my laptop and killed it. Took it apart and found corrosion on the mobo. Replaced the mobo. Fan started up then quit and got the 4 beeps (system timer error?) Then replaced the cpu. Same result. Replaced the ram. Still no change. fan starts then shuts down.
Have checked and rechecked all connections but just can t figure it out.
Dell Inspiron 1545
Intel pentium dual 2.16 667 mhz