When turning the screen on, the light turn green but then turns orange and nothing comes on the screen

This means that the monitor is not getting a signal from the computer. The problem could be the video or graphics card or it could be the monitor itself.

Try to connect the monitor into a known working CPU. If the monitor works, then you need to check your video card.Try to pull out the card and clean it using a DRY clean cloth. And then re-seat the card to the slot. If nothing happen, insert the card into an available video slot. or try different computer. If same problem occur, contact the manufacturer.

NOW, if the problem is the monitor, check the cable, try to use different video cable. If same problem occur, then it should be checked by a technician.

Thank you and good luck!