Which of the following item colorizes the paper using a two-component laser printer？ （）

单项选择题Whenexperiencingvideoproblems，whichofthefollowingshouldbeperformedFIRSTtoensurethatthemonitorisnotcausingtheproblem？（）

A.Check for the latest video drivers.
B.Install a known-good video adapter.
C.Attach the monitor to a known-good computer.
D.Replace the monitor.

单项选择题WhenrebootingacomputerrunningWindowsXPHome，atechnicianobservesanerrormessagestating，“illegalI Oportaddress.”Whichofthefollowingcanbedonetoresolvethiserror？（）

A.Upgrade the motherboard BIOS.
B.Upgrade to Windows XP Professional.
C.Upgrade the CPU on the motherboard.
D.Return to Windows 2000 Professional.