My screen turned white to pink in color. How do I fix this?

Check the graphics card is working by changing the monitor and testing the output on the screen. If this works ok, the issue is with the monitor. Again, i am assuming you have made sure the VGA cable is tight on both ends from the monitor and the computer?

You can try pressing the "degauss" function on the monitor in the menu, which MIGHT clear it
Or checking that the monitor is not near any strong magnetic fields

After that, the issue may be a "dry joint" on the circuit board, or possibly a failure of the colour controlling circuits in the monitor itself. either way, this required a TV technician to resolve