My scanner scans colour photos in a red and terquise colour. How do I fix this?

You might have to uninstall the scanner restart your computer then reinstall your scanner
if your printer/scanner came with an installation disc the drivers could be on it
you might have to uninstall the printer/scanner restart your computer then reinstall the printer/scanner and its drivers
click start control panel administrive tools computer management device manager scroll to ports(COM&LPT) + to expand you should see a communication port and Ecp printer port you might see a yellow?question mark this will mean you need to install a new driver for this device right click you will have options to update driver,disable,uninstall or select properties again you will have the similiar options also have option to troubleshoot
lift the lid on your scanner lay the photo face down then select scan document/photo it will ask what format you want to scan it then it will ask where you want to save it browse select the file/folder where you want to save it (my pictures) most common
hope this helps