Black Screen

[soloheart]

Hello, I have a problem when I turn on my computer.
The screen stays black as if it is not connected to the CPU. Yet the hard drive works well.
My graphics card works fine because I tested with another computer.
Many thanks for any help!

[Dr. V]

Hi
You tested your screen on another PC and another screen on your PC?

[soloheart]

Yes, I tested my screen with another computer: no problem.
Beep is heard during startup.

Thank you very much.

[Birdie]

Beep! is not a good sign.
Maybe the Ram. If you have 2 bar, trying to remove one. Otherwise, try another .You would not have a USB device that prevents booting? type modem.
If nothing is done, try to unplug any, cad that you keep just food and behind the screen and graphics card and Ram within (no SD card network and tracks if ....) motherboard starts.
If it does not start, you can try the "clear cmos"