My computer does not start the desktop when installing new monitor. It does not even recognize it as a new hardware.

Thanks for your help, Drbill

It might help to know what type of computer, OS, etc.
It could be that one of the pins is defective. Do you have Plug and Play feature? I would take the new monitor back and have it tested to prove it works.

Good luck, and Happy Holidays.

Thanks, Chery. Happy Holidays to you to. I will keep you in my prayers as you struggle with your cancer. Drbill