What makes the power go off when plugged

Solution
Possible that the battery needs replacing. Check the power adaptor is working correctly by getting it checked with a volt meter - easiest option. Also check the power input plug on the laptop is clear, and hasn't got anything stuck in it! Sounds silly, but it happens!
Possible that the battery needs replacing. Check the power adaptor is working correctly by getting it checked with a volt meter - easiest option. Also check the power input plug on the laptop is clear, and hasn't got anything stuck in it! Sounds silly, but it happens!
 
Solution