HP EliteBook 840 G6 screen started glitching suddenly after Windows Update
My HP EliteBook 840 G6 screen suddenly started glitching yesterday, and I’m trying to figure out what could have caused it before I pay for a screen replacement.
Earlier that day, I installed a Windows Security update. The update finished and asked me to restart the laptop. Less than an hour w/o restarting, the screen suddenly started glitching. I shut the laptop down and turned it back on, but the problem was still there.
I haven’t dropped the laptop or physically mishandled it, so the timing with the Windows update has me wondering if this could be software/driver related rather than a failed screen.
Can a laptop screen genuinely develop a hardware fault suddenly like this, even without any physical damage?
For an HP EliteBook 840 G6, what would be the most likely causes of this kind of screen glitch? Could a Windows update or graphics driver cause a problem that looks like a hardware failure?
I’d appreciate any suggestions for tests I can do to determine whether it’s the LCD, display cable, graphics driver/GPU, or something else before replacing the screen.
I’ve attached pictures of the glitch for reference.