Laptop glitching blue lines

[Emma_15]

When i tried to reboot my computer several blue lines started flashing on my screen and quickly it was enveloped in blue glitching lines. It did this several times when i restarted it and finally it's working normally again but sometimes the screen kind of blinks. I'm still worried there's something wrong with it?

 

[Laptop_Nerd]

Hi,

Please do try these troubleshooting steps that may help.
- Start by doing a clean install of the graphics card driver.
- Go to Device Manager and uninstall the graphics card driver.
- Next is to uninstall anything related to the graphics card from Programs and Features.
- Once completely uninstalled, download and install the latest driver from the manufacturer site.
- Reboot the laptop once the latest driver has been installed.
- If it will still not work, do also connect an external monitor and see if the same problem will persist or not.
- If the same problem will persist on the external monitor that means the problem is with the GPU.
- But if the external monitor will display normally that means it's the LCD that is the problem.