horizontal red lines on screen so I just started up my computer and my screen has horizontal red lines on it that are flickering they only show when i start up windows 10 and im on my screen where you see apps and stuff but when im on my load up screen they are not there i don't know how to fix this. If you have a laptop, you need to open its faceplate and access the screen. = Answear: it has nothing to do with your Laptops screen, or your PC monitor. 3) Your PC monitor hooked up to your laptop, started showing lines too. One set of either horizontal or vertical lines might indicate a damaged panel but can also be caused by graphics system failure or a loose internal video cable. Just press on the LCD screen with your both the thumbs on two different places. This could also be indicator of an issue with the panel of the display. You can also try to replace the ribbon cable. ... Diagonal or jagged lines, both horizontal and vertical, indicate panel damage. … 2) You bought a new PC monitor, and hooked that up to the laptop, no lines where shown on that monitor. An aging PC shows signs of regular wear and tear as years pass by, and loosened internal cables can create a number of nasty glitches. HP PCs and Monitors - Damaged Screen, LCD, or Display. The image below shows a blue line appearing randomly on my HP Spectre x360. One goes to the port of your screen, and the other to the port in the motherboard. When this tube reaches the end of its life, a white line shows across the screen. However, if the lines disappear, then you should replace the monitor. There doesn't seem to be anyone else with this issue! If there are vertical or horizontal lines on the screen it could mean that the refresh rate on your display needs to be changed. Black vertical bars blocking the sides of the screen are an indication of an incorrectly configured graphics card. LCD/LED Monitor: 1. If that is the case,[/strike] Try connecting an external monitor and see if it also shows the lines. 1) your laptop has "coloured lines" on the screen the laptop has. This solution has worked for many users. The causes behind laptop screen flickering on Windows 10 PCs can be boiled down to a few common culprits. To fix the vertical blue lines, you need to find the root cause of it. Then you can tinker around the screen to see if you can find the problem. These monitors used a technology called CRT or cathode ray tube which is a fancy name for a picture tube. If this is the case then you may need to request an RMA. If you happen to have one of these monitors and you’re seeing this single white line, unplug your monitor. Vertical semi transparent lines on my HP spectre x360, please help! Here are the ways to fix horizontal and vertical lines on laptop screen on any laptop like HP, Lenovo, Samsung, Dell, Acer etc. You can determine whether its … [strike]I am assuming you mean lines on the screen? Vertical lines on your laptop’s screen can either be caused by a software problem or a hardware problem. Jagged lines. Fix Horizontal, Vertical Lines Laptop Screen Pressing on the Screen and then using screw. It’s time for an upgrade. Unlike a desktop computer’s monitor, a laptop’s screen is actually a part of its body, which is why this problem can be the root of quite a lot of grief. Vertical lines running through your computer monitor can be disrupting during use: they can often be removed by properly configuring the computer and making sure the connection doesn't have any problems. If it doesn't, then the attached display, or the cable that connects it, are the problem and need to be either repaired or replaced.