toshiba satellite s55t-b5150 will not boot up, keyborad, WiFi, and powr lights come on but it will not boot. I tried, reseatin

[jjordan5902]

The keyborad, WiFi, and powr lights come on but it will not boot. I tried, reseating Ram. Removing battery and the other power tricks out there. Any ideas?

 

[webworkings]

If the lights come on, it may actually be turning on, just the display isn't. 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.