PLEASE HELP : monitor freezing problems

wwweapon

New Member
hey, i'm new here as you can see.

the other day i was on my computer and the screen froze and vertical lines appeared on the screen. it says unusable signal or something (i forget the exact term) so i tried unplugging the monitor, turning it off/on, etc. still nothing...so i have to reboot each time i'm in the middle of important school work. it's happened a few times since then..it has never done this before a couple days ago. what could it be? i need this fixed asap. if anyone has knows anything about this please help. thank you in advance.
 
i have no clue, i was thinking it was because i usualy leave it on all night and day so i unplugged it last night and it hasn't done it yet today. :D
 
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