no video

[guanatos]

I have a slim desktop 290- a0036 

when I start the computer doesn't do anything at all any signs.

I Belive there is a problem with the video

[BeemerBiker]

General trouble shooting for an HP system that is not booting up is here

https://support.hp.com/us-en/product/hp-slim-desktop-pc-290-a0000a/19390529/model/21447479/document/...

Before doing the above, press the power on switch for 30 full seconds then release.

Press one more time to turn on.

Do any LED on the keyboard light up (if USB keyboard)?

Any LED on the computer turn on?  Does it blink several times?

if not video but lights up then try cable to TV set or another monitor or alternate cable.

If system turns on then tap the ESC key and try to run diagnostics as explained in trouble shooting

else check warranty

get a quote for repair

1) Click on this link -
https://support.hp.com/us-en/contact-hp
2) Select your product type below.
3) Enter the serial of your device.
4) Select the country from the drop-down.
5) Select the chat or get phone number options based on your preferences.
6) Fill the web form and proceed further.