51Troubleshooting Entering PasswordEven after enter-ing the password,password inputscreen is displayedagain.z The computer may be in ten-key mode.If the NumLk indicator lights, press NumLk to disablethe ten-key mode, and then input.z The computer may be in Caps Lock mode.If the Caps Lock indicator lights, press Caps Lock todisable the Caps Lock mode, and then input.Cannot log on toWindows. (“Theuser name or pass-word is incorrect.”is displayed.)z The user name (account name) includes an “@” mark.- If another user account name exists:Log on to Windows using another user account name,and delete the account name that includes “@”. Then cre-ate a new account name.- If no other account name exists:You need to reinstall Windows (Î page 40). Shutting downWindows does notshut down.z Remove the USB device.z Wait one or two minutes. It is not a malfunction. DisplayNo display. z The display is turned off by the power-saving function.Touch the screen.z The computer entered sleep or hibernation by the power-saving function. To resume, press the power switch.z When using an external display,y Check the cable connection.y Turn on the display.y Check the settings of external display.The screen is dark. z The screen is darker when the AC adaptor is not con-nected. Open the Dashboard for Panasonic PC and adjustthe brightness. As you increase the brightness, battery con-sumption increases.You can separately set the brightness for when the ACadaptor is connected and when not connected.z Turn off the concealed mode (Î Reference Manual“Key Combination”).