My Lenovo Thinkpad T540p Had A Water Spill,after Drying It It Not Powering On

1. Remove the battery: Turn off the laptop and unplug it. Then, remove the battery from the laptop. This will prevent any power from being sent to the internal components and reduce the risk of further damage.
2. Dry the laptop: If you haven't already, use a dry towel or cloth to remove any excess water from the laptop. Then, place the laptop in a well-ventilated area and allow it to dry completely for at least 48 hours.
3. Check for signs of damage: Look for any signs of damage, such as corrosion or discoloration on the internal components. If you notice any damage, you may need to take the laptop to a professional for repair.
4. Try a different power source: If you're using a power adapter to charge the laptop, try using a different one to see if the issue is with the adapter.
5. Try to power on the laptop: After the laptop has completely dried, reattach the battery and power on the laptop. If it doesn't turn on, you may need to take the laptop to a professional for repair.

In general, water spills on laptops can be very damaging and may require professional repair. If none of the above steps work, I recommend contacting Lenovo support or taking the laptop to a professional repair shop for further diagnosis and repair.