A vertical thin black line in the middle of my monitor

[Susie17]

Nothing that I know of just showed up today.

[WAWood]

@Susie17

Hello;

Allow me to welcome you to the HP forums!

When you have a display problem like this, it can be any combination of the following:
1) Monitor failing
2) Video cable shorting
3) Graphics chip in the PC failing

To check 1) you need to connect the monitor to a different PC and see if the problem remains. If it is still there, and the monitor is under warranty, you need to contact HP to see about getting it replaced or repaired.

To check 2), you need to use a different cable to see if the problem remains. If it is still there, you need to replace the cable.

To check 3), you need to try a different monitor with this PC. If the problem appears on the new monitor, then the video chip is failing and that needs to be replaced. If the cable is connected to the motherboard, that means it is bad and replacing that is expensive. If the cable is connected to a plugin card, that card needs to be replaced.

Sorry, but we have no way of diagnosing or repairing your PC from here.

Here is contact information for HP Customer Support:

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!

If you have trouble finding a phone number, then try: 1 (800) 474-6836

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However, HP Customer Support is generally not available on the weekends, so you might have to wait until Monday to contact them.
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Good Luck