How much does it cost to repair?

US: usually more than the monitor is worth — a panel swap starts around $150 and most 24"–27" monitors cost less new. India: ₹4,000–10,000 for a panel, so a new monitor is often the better buy.

Vertical line on monitor screen

About 7 seconds, full screen, then one question.

Line pattern⛶ Full screen

A line pattern shows a missing or extra row instantly; the colour tiles below show whether it is on every colour.

Plain colours, full screen:

White screen Black screen Grey screen Red screen Green screen Blue screen

Depends — see test

Vertical lines on a monitor screen are either the signal or the panel.

Test it now

Full-screen white, then black, then the colours: a panel line is fixed on all of them. Take a screenshot — a line that is in the screenshot is the graphics card or driver. Swap the cable (HDMI/DisplayPort) and the port. On a TV, open the TV's own menu: lines across the menu are the panel or T-con board.

What it is

Vertical lines on a monitor screen are either the signal or the panel. Lines that appear in a screenshot, or that change when you swap the cable or the port, are the graphics card or cable. Lines that are fixed on every input and every colour are the panel's driver board or the panel itself.

Can it be fixed?

Cable: yes, a small repair (the cable is a ₹500–1,500 part in India, $20–40 in the US, plus labour). Graphics driver: yes, free — update, or roll back. Panel: no, replace the panel. Graphics chip hardware: usually a motherboard, and on a laptop that decides whether it is worth it.

What to do

Screenshot: line in it = graphics card or driver.
Swap cable and port; try another source.
Lines on every input and in the on-screen menu = panel or driver board; get a quote.
Compare the quote to a new monitor — for monitors under 27" a new one is usually cheaper.

What a repair costs

United States	usually more than the monitor is worth — a panel swap starts around $150 and most 24"–27" monitors cost less new
India	₹4,000–10,000 for a panel, so a new monitor is often the better buy

Typical ranges from repair-shop and manufacturer price lists, 2026-09-06. Get two quotes; prices vary by model and city.

Warranty

Most makers replace a panel under warranty for physical panel faults that are not accidental damage; pressure marks, cracks and liquid damage are treated as accidental and are not covered. For dead pixels, each brand has a threshold (typically 3–5 bright or 5–8 dark pixels on a laptop; Dell's premium-panel guarantee replaces at one bright pixel).

Black spot on monitorA black spot, black dot or dark mark on a monitor or computer screen has the same three causes as on a laptop: dead pixels (a sharp black point or cluster on every colour), a crack in the LCD (a black blot with lines running from it), or pressure damage from something pressing the panel (a soft dark smudge on white).Not fixable — new panel Black dot on computer screenA black dot on a computer screen that shows on white and vanishes on black is inside the panel: a cluster of dead pixels (a sharp-edged tiny square), a pressure mark (soft-edged, where something pressed the panel), or dirt under the glass (moves if you press gently, on tablets and monitors only).Depends — see test Black mark on computer screenA black mark on a computer screen that shows on white and vanishes on black is inside the panel: a cluster of dead pixels (a sharp-edged tiny square), a pressure mark (soft-edged, where something pressed the panel), or dirt under the glass (moves if you press gently, on tablets and monitors only).Depends — see test Why is there a purple line on my iPhonePurple vertical lines on an iPhone screen are almost always the display itself: the flex connector between the panel and the board has lifted (often after a drop or a swollen battery pushing from behind), or a row or column driver on the panel has failed.Depends — see test