Cyan and white stripes appear when turned on

If you see "fractured lines" across the screen, it would appear that your LCD screen is broken. That's the only way these kinds of lines appear.
You need to replace the screen.

Have you tried using the jet substitution instead of cleaning every time. We used to do that till we had 5 or 6 weak jets then run the cleaning and if they have all recovered turn off the jet substitution..

This system has a VGA port so you can plug in an external monitor. You can buy one for less than $130 based on the Sunday ads. Other than that, it is new laptop time.

white screen problem

you need to replace the LCD panel. go to the HP site and look for a replacement part.

I decided to change the background of my desktop and it works.

well if u keep them on the charger for to long u need to get new ones cuz it will shorten the batteries on and on so buy new ones k!

I have found that vertical lines that suddenly appear from projectors are due to poorly connected cables. Sut off your projector and wait for the fan to go off. Then unplug the connectors from the computer to the projector and secure them again, making sure to go all the way. Hope this helps.

you don't mention whether the document you are copying also appears on the paper.If it does you could have 1 of 2 problems-
The drum cleaning system could be at fault or-
the fuser roller has picked up some **** easy test...... run copies and when the 1st copy edge appears switch OFF. This is a crash stop.Now examine the sheets in there.Is the stripe on the copy before the fuser (Heat) roller? If yes you could have a drum cleaning problem, usually fixed by changing the drum module.If no and the stripe appears after the heat roll, the problem is with the fuser system,dirty rolls etc. There are a number of other problems with stripes, but you have to start somewhere! If the document does NOT appear on the copy, forget all above, could be scan or ROS problem