HP 440 G2 User's Guide Page 78
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- Table of contents
- TROUBLESHOOTING
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CAUTION: Avoid strong cleaning solvents that can permanently damage your computer. If you are
not sure that a cleaning product is safe for your computer, check the product contents to make sure
that ingredients such as alcohol, acetone, ammonium chloride, methylene chloride, and hydrocarbons
are not included in the product.
Fibrous materials, such as paper towels, can scratch the computer. Over time, dirt particles and
cleaning agents can get trapped in the scratches.
Cleaning procedures
Follow the procedures in this section to safely clean your computer.
WARNING! To prevent electric shock or damage to components, do not attempt to clean your
computer while it is turned on.
Turn off the computer.
Disconnect AC power.
Disconnect all powered external devices.
CAUTION: To prevent damage to internal components, do not spray cleaning agents or liquids
directly on any computer surface. Liquids dripped on the surface can permanently damage internal
components.
Cleaning the display (All-in-Ones or Notebooks)
Gently wipe the display using a soft, lint-free cloth moistened with an
alcohol-free
glass cleaner. Be
sure that the display is dry before closing the display.
Cleaning the sides or cover
To clean the sides or cover, use a soft microfiber cloth or chamois moistened with one of the cleaning
solutions listed previously or use an acceptable disposable wipe.
NOTE: When cleaning the cover of the computer, use a circular motion to aid in removing dirt and
debris.
Cleaning the TouchPad, keyboard, or mouse
WARNING! To reduce the risk of electric shock or damage to internal components, do not use a
vacuum cleaner attachment to clean the keyboard. A vacuum cleaner can deposit household debris
on the keyboard surface.
CAUTION: To prevent damage to internal components, do not allow liquids to drip between the
keys.
●
To clean the TouchPad, keyboard, or mouse, use a soft microfiber cloth or a chamois moistened
with one of the cleaning solutions listed previously or use an acceptable disposable wipe.
●
To prevent keys from sticking and to remove dust, lint, and particles from the keyboard, use a
can of compressed air with a straw extension.
Updating programs and drivers
HP recommends that you update your programs and drivers on a regular basis with the latest
versions. Go to
http://www.hp.com/support to download the latest versions. You can also register to
receive automatic update notifications when they become available.
68 Chapter 10 Maintenance
- User Guide 1
- Safety warning notice 3
- Table of contents 5
- 1Welcome 11
- Finding information 12
- Finding information 3 13
- Display 7 17
- Regulatory, Safety, and 18
- Environmental Notices 18
- Display 9 19
- TouchPad 20
- Bottom 17 27
- 3 Connecting to a network 29
- Using a WLAN 30
- Setting up a WLAN 31
- Configuring a wireless router 31
- Protecting your WLAN 31
- Connecting to a wired network 32
- Using pointing devices 34
- Using pointing devices 25 35
- Scrolling 36
- 2-finger pinch zoom 36
- 2-finger click 37
- Rotating (select models only) 37
- Flicking (select models only) 37
- Using the keyboard 39
- Using Windows shortcut keys 40
- Identifying the hot keys 40
- Using keypads 41
- Using the keyboard 33 43
- 5 Multimedia 44
- Webcam (select models only) 45
- Configuring audio for HDMI 47
- 6 Power management 49
- Initiating and exiting Sleep 50
- Using battery power 51
- Using Battery Check 52
- Managing low battery levels 52
- Conserving battery power 54
- Using external AC power 55
- 7 External cards and devices 57
- Using a USB device 58
- Removing a USB device 59
- Handling drives 60
- Using hard drives 60
- Removing the service doors 61
- Replacing the service doors 61
- Removing the hard drive 62
- Installing a hard drive 63
- Using Disk Defragmenter 64
- Using HP 3D DriveGuard 65
- 9 Security 66
- Setting passwords in Windows 67
- Setting a DriveLock password 70
- Entering a DriveLock password 70
- Changing a DriveLock password 71
- Removing DriveLock protection 71
- Using antivirus software 73
- Using firewall software 73
- Using HP Client Security 73
- 10 Maintenance 75
- Cleaning your computer 77
- Updating programs and drivers 78
- 11 Backup and recovery 80
- Using f11 recovery tools 81
- Using HP Software Setup 82
- Using Computer Setup 83
- Updating the BIOS 85
- Using MultiBoot 86
- 13 Support 90
- Component 91
- (1) Serial number 91
- (2) Product number 91
- (3) Warranty period 91
- A Traveling with the computer 93
- B Troubleshooting 94
- A disc does not play 96
- C Electrostatic discharge 98
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