Hp pavilion dv7 black screen f12 lit caps lock flashing

[twireone9]

Trouble with my pavilion dv7
The screen stays black. Fan is running. Caps lock flashing. F12 lit. I have tried reseating ram, holding down power without battery, holding down Windows and b. Nothing working

 

[Seyed22Shaheen]

Did you try replacing your RAM?

 

[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.