Monitor screen changes from regular color to a green tinted screen?

Try a different video cable or make a careful inspection of the pins in the video connectors. Look for bent or missing pins. Your missing a color channel.

Sounds like the monitor cable has a short or loose connection at computer or monitor side.

Go to the menu on your tv and look for the color balance controls, You should be able to adjust the color to make it better.

Make sure you did not bend any pins also make sure of that fact on both ends if not there has to be a solder connection inside that has faultered on you. The unit will need to be opened up to verify solder connection- Thanks

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

Connect a different monitor to your computer, if it still displays the same fault the the problem is the video card and you need a replacement.

Looks like you need to purchase a new monitor. If it's too worn out then it's the outcome. I also had the same problem before and I ended up buying a new one. You should not experience that thing if it's new.

the VGA cable connecting from moniter to the computer is faulty so replace new

The instruction manual should tell you how to get into the menu for the monitor to change the color settingts. With a make and model number I can give you step-by-step instructions on how to change them.

You have a bad optical block, the block has a 2 year warrnty but you will have to pay labor to have a tech change it

if your monitor has color controls try them,if your monitor has auto adjust try that too.if you can test the monitor on another computer try that as well to verify the monitor is causing the problem.if none of this works its safe to assume that the color control circuitry in the monitor has failed and with todays monitor prices it is cheaper to replace than to repair.