Every 4 seconds exactly my screen glitches
Exactly every 4 seconds my screen switches from normal to repeating the top bar all the way down the screen for 4 seconds and then goes back to normal and repeats.
Update (03/16/2020)
To summarize for any future readers, the issue was only with the built-in monitor, external monitors worked fine, and the issue persisted in the BIOS menu, most likely indicating a hardware issue. There was no visible damage to the motherboard or the wiring to the screen. I plugged in another , working laptop screen and it worked without issue. I'm fairly certain a replacement screen will fix it. I will update when I get the replacement.