HP 2009f Monitor has blue and pinkish flickering lines on certain areas

Hi
As I'm typing this, I'm seeing flickering blue lines (or dots, not sure) around the screen. It could be anywhere but I noticed that it only shows up on whitish areas for the blue lines/dots at least, for the pink lines/dots I think they show up on grayish areas. The lines/dots also move as I try to configure the Contrast via the OSD settings the monitor provides. I can't take a screenshot because it doesn't show up to other users. I'll try to take a picture as soon as I get my hands on a camera though. I have tried connecting to another monitor to see if the problem is in the graphics card but it's not. I also tried to connect my monitor with my cousin's CPU with both the VGA and DVI cable I had and the problem persists. So not a cable issue but the monitor itself. Any suggestions?

This problem wasn't here before. I think it started last year or earlier. Forgot, sorry. Just didn't get bothered by it because I thought that was normal. I don't think this is a "stuck pixel" issue because it moves as I change the contrast.
Not a software issue too because it even shows up in Safe Mode.

No, my monitor is not under warranty anymore as this is already 5 years old lol. The monitor was bought with the HP Pavilion p6355d CPU.