I seem to be having a problem where I see red horizontal lines appearing on my monitor when I'm at 60 hertz, when I go down to 30 hertz they seem to go away, along with blue horizontal lines near the top of my monitor (when at 60 hertz, they go 'away' at 30 hertz as far as I've seen). I have an ASUS VS228H-P 21.5" Full HD 1920x1080 HDMI DVI VGA Back-lit LED Monitor with 980 GTX TI, I've tried seeing if it was a loose cable but to no avail, they're firmly connected with an HDMI to HDMI cable. Was wondering if anyone had any similar issues or knows a good fix to this as I can't really tell. Some other miscellaneous info if it'll help. My processor is Intel core I7-4790K CPU @ 4.00 GHz, I have a good cooling system so my temps aren't a problem. Another thing is I've used this monitor on a previous computer and these red horizontal lines didn't show up ever. They also seem to show up when starting up the cpu.