I charge my laptop for hours and it shows that the battery is drained or isn't charging.

The problem might be located in your hard drive. There are a few probable causes for this including: (1) Your computer is bumped or jostled while it is running (2) The electric motor which allows the platter to spin fails due to bad bearings or other components (3) The filter on your air intake gets too clogged or the filter isn't working properly (4) Extreme heat while running causes the electronic circuit board to fail (5) There is a sudden power failure while the disk is writing Try troubleshooting your hard drive for these possible causes and refer to the repair guide to help fix this issue.