Toshiba laptop wont turn on/Black screen on start up

[Brad9201]

My older toshiba satellite s855 has been having issues recently with (as the title states) starting up. I have checked the RAM modules and both work fine in other laptops (meaning the RAM slots are still a high possibility if its a hardware issue). The charger that I have with it is a third-party replacement and is a 19V~3.42A whereas the original charger was 19V~3.95A. I have plugged it up to a monitor and still nothing. If anyone else has any ideas or solutions please help me. I'm a college student so paying high up there is something I really dont want to do. So if it's the GPU needing reballed than I'm not up for that fix. Thanks for any replies

 

[webworkings]

Try this...

1. Turn the laptop off (not sleep or hibernate but off).
2. Connect an external monitor to the laptop.
3. Turn on the external monitor.
4. Turn on the laptop.

NOTE: You may have to press an "external monitor" button. Could be the f4 button or a button with two monitors on it, for the external monitor to work.

If you can see fine on the external monitor, then your attached display, or the ribbon cable that connects it, are your problem.

If you can't see on the external monitor at all, or the problem occurs on the external monitor as well, then it is probably the graphics card/GPU that is the problem, which may require the motherboard be replaced.