If your Inspiron laptop doesn’t turn on, take a few minutes to troubleshoot the problem.

The Dell Inspiron 15 3521 laptop can be powered with a battery or an AC adapter. If you cannot turn on the laptop, it could be simply a battery or power problem.

Battery
Make sure the battery is charged and that the power cord is plugged in. Turn the laptop off. Remove the battery, then turn the laptop back on. If the laptop comes on, it is a bad battery.

Status LEDs
Check the LED lights on front of the laptop. If the laptop power adapter LED is not lit, and the cord is plugged in, you might have a faulty AC adapter. Check the connection on the laptop and the wall outlet. Dell Inspiron 15 3521 Laptop Battery Plug the adapter into another wall outlet. If there is still no Power LED light, the power adapter is more than likely bad. Refer to the owner’s manual to find the solution to this problem.

Remove Laptop Components
Remove the battery, memory cards, hard drive and CD drive. Refer to the owner’s manual for instructions on how to remove them. Once these are removed, plug the AC adapter into the laptop and plug the other end into a wall outlet. Press and hold the power button down for 20 seconds to try to turn the laptop on. If it will not turn on, Dell Inspiron Laptop Battery the problem is more than likely the system board.