HP 20-k120us Mobile Display problems, Keyboard and mouse problems, Computer is not responding

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Computer is not responding

Use the Windows Task Manager to close any programs that are not responding.

1.Press the ctrl+alt+delete keys.

2.Click Task Manager.

3.Select any program that is not responding, and then click End Task. If closing programs does not work, restart the computer.

1.Press the ctrl+alt+delete keys.

2.Click the Power icon, and then click Restart. Or, press and hold the power button on the computer for 5 or more seconds to turn off the computer, and then press the power button to turn on the computer.

Computer shuts down unexpectedly

The computer might be in an exceedingly hot environment. Turn it off and let it cool down.

Be sure that the computer vents are not blocked and that the internal fan is running. See Getting to know your computer on page 4 for the location of the computer vents.

Display problems

The display is blank

Exit Sleep to redisplay the screen image.

Press the power button briefly.

Press a key on the keyboard.

Press the space bar.

Press the esc key.

Press the power button to turn on the computer.

Images on the screen are too large or too small, or the images are fuzzy

Adjust the resolution settings.

1.From the Start screen, type c, and then select Control Panel.

2.Select Appearance and Personalization.

3.Under Display, select Adjust Screen Resolution.

4.Adjust resolution as necessary, and then click Apply.

Keyboard and mouse problems

Be sure that you are using the keyboard or mouse within range of the receiver.

Be sure that the mouse is not in Suspend mode, which occurs after 20 minutes of inactivity. Click the left mouse button to reactivate it.

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Contents User Guide Product notice Safety warning notice Iv Safety warning notice Table of contents Performing routine maintenance Wireless connection problems Vii Input power Operating specifications Starting right Best practicesFun things to do More HP resources Resource ContentsMore HP resources Finding your hardware and software information Getting to know your computerFront Locating hardwareRight side Right sideEnvironmental Notices Left side Top BackBottom LabelsIdentifying the labels Connecting to a wireless network Connecting to a networkUsing the wireless controls Using an Internet service providerSetting up a Wlan Configuring a wireless routerProtecting your Wlan Connecting to a Wlan Connecting to a local area network LAN Connecting to a wired networkVolume control Enjoying entertainment featuresUsing the webcam Using audioConnecting headphones Using videoUsing Beats Audio Accessing Beats AudioNavigating using the keyboard and pointing devices Using touch screen gesturesOne-finger slide Scrolling TappingPinching/stretching Rotating select models onlyEdge swipes Left-edge swipe Right-edge swipeTop-edge swipe and bottom-edge swipe Fn key Using the keyboardIcon Key Description Using the action keysUsing the integrated numeric keypad Using Microsoft Windows 8 shortcut keysNum lock key Initiating Sleep and Hibernation Managing powerIntel Rapid Start Technology select models only Manually initiating and exiting SleepSetting password protection on wakeup HP CoolSense select models onlyManually initiating and exiting Hibernation Shutting down turning off the computer Managing and sharing information Using a USB deviceRemoving a USB device Connecting a USB deviceInserting and removing a memory card Using Disk Cleanup Performing routine maintenanceUsing Disk Defragmenter Maintaining peak performanceCleaning your computer Cleaning productsCleaning procedures Setting Windows passwords Using security measuresUsing Internet security software Setting Setup Utility Bios passwordsInstalling software updates Installing Windows updatesUpdating software Starting Setup Utility Bios Updating the BiosDetermining the Bios version Downloading a Bios update Using HP PC Hardware Diagnostics UefiDiagnostic section, click HP Uefi Support Environment Downloading HP PC Hardware Diagnostics Uefi to a USB deviceCreating recovery media and backups Backing up, restoring, and recoveringCreating HP Recovery media Restore and recovery Remove everything and reinstall Windows Using Windows Refresh for quick and easy recoveryRecovering using HP Recovery Manager Using the HP Recovery partition select models onlyWhat you need to know Removing the HP Recovery partition Using HP Recovery media to recoverChanging the computer boot order Page Wireless connection problems TroubleshootingCannot connect to a Wlan Cannot connect to a preferred networkCurrent network security codes are unavailable Cannot connect to the wireless routerHard drive error Power problemsNetwork status icon is not displayed Computer will not turn on or startKeyboard and mouse problems Display problemsComputer is not responding Computer shuts down unexpectedlyPage No sound is produced Audio problemsSoftware problems Specifications Input powerOperating specifications Electrostatic Discharge Index Bios
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