a vertical line is appearing on the internal display

[sandy_]

its been a single vertical line appearing on the display of laptop,,updated the windows ,still not solved,,   bought it very recently   hardly 4 months

I cant understand whats the actual problem

[WAWood]

@sandy_ 

This is most likely a hardware issue with the display -- and that is something we can not fix.

You should not be having problems like this with a new PC!

You paid for free HP Tech Support as part of the warranty coverage, so you might as well make use of it.

While this PC is still under warranty, you should contact HP Customer Support directly to have them put you in touch with HP Technical Support to see what they can do about troubleshooting and repairing your machine remotely.

You need to explore what options you have to get it replaced under the warranty.

If you live in the US or Canada, contact information is on this page: http://www8.hp.com/us/en/contact-hp/phone-assist.html#section1

If you live elsewhere, contact information is on this page: http://www8.hp.com/us/en/contact-hp/ww-contact-us.html

NOTE: After you get through, stay on the line until you are finally able to talk to some one -- it can take a while!