[SOLVED] Why Desktop PC not show display?

[ssdNow]

Hello everybody,
I have a problem with my dekstop PC: when i connect PC to Monitor (with HDMI) i couldn't see anythings. What do you think that can be?

 

[Phillip Corcoran]

Please post full system specs including PSU make & model.

 

[White Crow]

If it was working before then try cleaning the ram and graphics card. Also if you weren't using hdmi before then try using the previous cable

 

[ssdNow]

Please post full system specs including PSU make & model.

It start then i think that isn't the PSU the problem. Anyway the model of PC is the old HP a600.
Thanks you for answers.

 

[ssdNow]

If it was working before then try cleaning the ram and graphics card. Also if you weren't using hdmi before then try using the previous cable

What do you purpose with "cleaning"? Fisically? It already done!

 

[Phillip Corcoran]

Does your HP a600 have an HDMI port or are you using an adapter to connect the monitor?

Because looking at the specs for the a600 it doesn't have HDMI port, it only has VGA interface, but I could be wrong.

 

[ssdNow]

Yes, I'm using HDMI port because it has this board.
I wont to itemize that actualy i haven't mouse and keyboard. But I think that this isn't a problem for black screen right?

 

[Phillip Corcoran]

Yes, I'm using HDMI port because it has this board.
I wont to itemize that actualy i haven't mouse and keyboard. But I think that this isn't a problem for black screen right?

I don't understand your first sentence: "..... because it has this board" --- Please explain.

Having no mouse or keyboard connected wouldn't cause a black screen, but would usually cause the boot process to come to a halt without keyboard connected.

 

[hang-the-9]

Yes, I'm using HDMI port because it has this board.
I wont to itemize that actualy i haven't mouse and keyboard. But I think that this isn't a problem for black screen right?

According to the specs of that system the only video connector is has is VGA.

Start at the beginning, has this system ever worked for you? What have you tried already? It turns on, any error beeps? Try different RAM? Just because it turns on does not mean the power supply is good. Could be a bad motherboard also. Remove the RAM, does the system give you error beeps?