No video signal!!

[minhvn2k5]

Hey please help, I have a problem. First, i'm bad at English, hope you guys can understand my words. I have a hp elitedesk 800 65w g4 and a HP Monitor 24fw come from my uncle in Hungary. My desk only have displayport so i have Hp DP to HDMI adapter. After 6 month, my monitor say no video signal. I've try to check everything. CPU Fan and Power could still run. I tried to press numlock and caplock and it's still work. Then i connect my monitor to other old PC by VGA and the monitor has signal. So, i buy another DP to Hdmi adapter Ugreen and Vention but it's not still work. My neighborhood don't have any computer shop and i don't know what error. Please resply me soon. Thank you.

[itsmyname]

@minhvn2k5 -- After 6 month, my monitor say no video signal

Does your monitor have more than one "video-input", e.g., VGA or DVI or HDMI or DisplayPort?

If it does, then you have to use the buttons on the monitor to select one of these possible inputs.

If you select an input that is NOT active, you will see that "no input" message.

[minhvn2k5]

Yeah, I check all of it, still no signal

[Prométhée]

Hello @minhvn2k5 

"Then i connect my monitor to other old PC by VGA and the monitor has signal"
the computer, maybe the problem is not the monitor
Try if possible to test another monitor, on the computer, same thing, it is the computer not the screen, which is in question!

[minhvn2k5]

@Prométhée, thank for your help, but I forgot to add important details, three days ago. The monitor has signal after 6 months, I thought finnaly it work, but after restart it had no signal from that evening to now. I have tried to connect it to Samsung tv (it has hdmi) but still no signal