my monitor suddenly has a pink tint over everything

One more thing to check if the cable swap doesn't fix it. In your graphics control panel (Nvidia, AMD or Intel), look for the output colour format and set it to RGB / full range. Over HDMI some cards switch to YCbCr after a driver update, and that can tint the whole picture pink or green. If HDR is turned on in Windows for a monitor that doesn't handle it well, turn it off too, that can make colours look wrong.

Pink usually means the green signal isn't getting through, and nine times out of ten that's the cable. Reseat both ends, then try a different cable or a different port. Good test: open the monitor's own on-screen menu with its buttons. If the menu itself is pink, it's the monitor. If the menu looks normal and only the picture is pink, it's the cable, the PC's output or a colour setting. Worth checking the monitor hasn't been switched to a colour preset or a custom RGB setting by accident too.