I have an e580 ThinkPad. A little bit of rain came into my backpack and into the laptop. It would not turn on and appeared to be shorting. After drying it out, it turned on just fine and worked for 4 days including charging the battery a few times. After 4 days, while the laptop was working fine, I noticed the battery was running out despite the charger being plugged in. I checked the charger and it works on another device, so issue is with the laptop. The charging light does not show at all and computer will no longer power on after the battery ran out of charge. I cleaned the plug in area with alcohol. The laptop is fine but something seems to have gone wrong with the power supply. What can I do?