RE: My Inspiron 15 won't turn on
You may try running the diagnostics following the steps provided in the above post.
I would suggest you to drain the residual power from the laptop:
- Disconnect any external peripherals (flash drives, printers, external hard drives) from the computer.
- Remove the adapter and then the battery.
- Press and hold the power button for 10-15 seconds.
After draining the residual power, try reseating the memory and see if the system is able to boot.
Please refer to the system manual for parts replacement and read the safety information that shipped with your computer.
The link is http://bit.ly/TLPARR.
Keep me posted with the results. I will be glad to assist you further.