Why does my computer monitor turn on and off?

Why is my computer monitor going to sleep right when I turn my computer on?

• This HP computer is fairly new, only about a year old. It hasn't always been doing this, but within the past two months, whenever I try to turn my computer on, my monitor refuses to work. The computer and printer both turn on, but the monitor displays a "NO SIGNAL" image, and after a few seconds, it says "Monitor going to sleep". Whenever I try jiggling the mouse, it still remains black. Also, my keyboard does not turn on, and I don't think my mouse is working, either. I'm not very skilled with computers, so please be kind.

• Answer:

  seems like your computer is dying lol. tbh maybe the monitor is not connected properly or someone went all the way to change the power setting of your computer and maybe deactivated the mouse and keyboard driver. Or i can be frank since i owned two HP computers, They really suck and it time to get a Toshiba or Dell(don't worry they are getting a better reputation than b4). Toshiba is a better choice but they have the worst webcams so if video calls are ur thing get a new webcam. Ur in for luck if you are Canadian cause boxing day is comin and nows the perfect time to get a bargain price and new laptop