Which of the following should be considered when upgrading memory？ （）

A.has not been installed on the user’s computer.
B.is not turned on.
C.driver is corrupt.
D.cable is unplugged.

A.The LCD is not running in its native resolution.
B.LCD monitors do not appear blurred.
C.The drivers are improperly installed.
D.More video memory needs to be allocated.

A.Hold the function Num Lock key down during POST.
B.Go into the Windows Keyboard applet and deselect the ’Num Lock on boot’ option.
C.Create a Windows profile to disable the feature during power-on self test （POST）.
D.Turn the feature off in the BIOS.