I went to turn on my computer about a week back when all of a sudden bam there were green lines on the screen so i tried a different GPU it was the same but red and could only get it to output something on the display once. Then windows started to boot in a loop which i couldn't stop, so i assumed the HDD was failing tried a new HDD and no change whatsoever. My mind then drifted to thinking it could be a problem with the board's connections. I bought a new one and did the same thing. I then thought to myself maybe it is a broken HDMI port on my monitor, so i switched out the monitor and the original GPU made the screen entirely green, switched to the other GPU and it was how it normally was (with red lines). What could the problem possibly be? (I could on some occasions boot but i would shut it down and turn it on again and it wouldn't boot)