113Troubleshooting (Advanced)Refer to the following instructions when a problem occurs. If the remedies indicated in the chart do not solve the problem,contact Panasonic Technical Support. For a software problem, refer to the instruction manual of the software.• To check the computer’s usage status (Î page 127). Shut DownCannot shut down or restart Windows. z Remove USB devices.z It may take 1 or 2 minutes to shut down. DisplayThe screen does not become brighteven if pressing Fn + F2.z The brightness is set low to avoid malfunction where surrounding temperatureis high. Use it in an environment of between 5°C and 35°C.Takes time to display [Power Options]screen.z With the following steps, confirm whether [Copy of Panasonic Power Manage-ment] created when the Power Saving Utility is made has become 100 andmore or not.A Click or on the notification area and click [More power options].B Click [Show additional plans].When more than one [Copy of Panasonic Power Management] is displayed,click [Change plan settings] in the power plan to be deleted and click [Deletethis plan] to delete.Graphics display performance is low. z When you start up the computer for the first time after purchase, the Intel® GPUis activated to save power.Restart the computer, and set [Switchable Graphics] in the [Main] menu of theSetup Utility to [Performance Video]. This activates the discrete GPU, whichmaintains a higher graphics display performance, after the computer starts.z When [Switchable Graphics] in the main menu of the Setup Utility is set to[Switchable], activate the discrete GPU, which maintains a higher graphics dis-play performance. (Î page 3) Sleep *1 or HibernationCannot enter sleep *1 or hibernation. z Remove USB devices temporarily. If the problem persists, restart the computer.z It may take 1 or 2 minutes to enter sleep*1 or hibernation.z The computer may not enter sleep*1 when the computer is communicating viamodem.z The computer does not enter sleep *1 or hibernation immediately after resuming.Wait approximately 1 minute.