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Troubleshooting Laptop Issues
Содержание книги
- Table 1-4 Major CMOS/BIOS Settings
- Table 1-5 Motherboard Form Factors
- Adapter Cards and Integrated Ports
- Daughter Boards and Riser Boards
- Installing SATA, PATA, and SCSI drives
- Table 1-10 typical PATA settings on systems with two PATA host adapters and two drives
- Table 1-12 Power Fluctuations
- Table 2-2 EIA-568-A Wire Pairs and Pins
- Public, Private, and APIPA IP Addresses
- Static and Dynamic IP Addresses
- Table 2-6 Ports and Protocols
- Installing and Configuring a SOHO Router
- Table 2-9 Common DSL Services Compared
- Line-of-Sight Wireless Internet Service
- Install and Configure Laptop Hardware and
- Other Laptop Display Components
- Docking Station Versus Port Replicator
- Table 4-1 Laser-Printing Process
- Printer Installation and Connections
- Lifting and Moving Equipment Safely
- Communication and Professionalism
- Windows XP, Windows Vista, and Windows
- UAC and the Administrator Account
- Table 6-5 Command-Line Tools for Networking
- Features and Tools Usage How to Run
- Control Panel Options Unique to Windows 7
- Table 6-12 Network Settings by Windows Version
- Table 6-14 Recommended Preventive Maintenance Tasks in Windows
- Virtualization Resource Requirements
- Security Best Practices for Workstation Security
- Data Destruction and Disposal Methods
- Table 7-4 Securing a SOHO Wired Network
- Getting Applications for Your Device
- Mobile Network Connectivity and Email
- Laptop and Tablets: How They’re Different
- Gather Data from the Customer
- Table 9-2 Motherboard, RAM, CPU, and Power Symptoms, Causes, Solutions
- Troubleshooting Video and Display Issues
- Table 9-6 Troubleshooting Tools for Wired and Wireless Networks
- Table 9-9 Operating Systems Symptoms, Problems, and Solutions
- Troubleshooting Security Issues
- Troubleshooting Laptop Issues
- Table 9-13 Tools for Fixing Printer Problems
- CMOS (complementary metal-oxide semiconduc-tor), 11-15, 94
- Digital access, prevention methods, 136-140
- FORMAT command-line tool, 112
- ISPs (Internet service pro-viders), 44
- NSLOOKUP command-line tool, 112
- Preventive maintenance, Windows, 127
- System protection setting (Control Panel), 119
This section reviews common causes and typical solutions for issues with laptops. Use Table 9-12 to look up typical laptop symptoms, problems, and solutions.
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| Chapter 9: Troubleshooting 197
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| | Table 9-12 Laptop Symptoms, Problems, and Solutions
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| | Symptom
| Possible Cause
| Items to Check
| Typical Solution
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| | No display
| System set to use
| Fn key setting for
| Press Fn key combination
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| external display
| display switching.
| to switch back to internal
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| only
| Display properties.
| display.
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| Inverter or back-
| Use a flashlight to
| If the display is visible
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| light failure
| see if the desktop is
| with flashlight, check the
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| visible.
| inverter; replace if defec-
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| tive.
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| If the inverter is okay,
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| replace or repair the back-
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| light or LCD assembly if
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| cost-effective.
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| LCD subsystem
| Use a flashlight to
| If the display is not visible
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| failure
| see if the desktop is
| with a flashlight, plug in
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| visible.
| an external display.
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| If the external display
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| works, the LCD display
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| panel should be replaced
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| or repaired.
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| If the external display
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| doesn’t work, replace
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| the video module on the
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| motherboard or the moth-
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| erboard.
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| | Dim display
| Inverter or back-
| Use a flashlight to
| If the display is visible
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| light failure
| see if the desktop is
| with flashlight, check the
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| visible.
| inverter; replace if defec-
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| tive.
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If the inverter is okay, replace or repair the back-light or LCD assembly if cost-effective.
198 CompTIA A+ Quick Reference
Table 9-12 Continued
| Symptom
| Possible Cause
| Items to Check
| Typical Solution
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| | Flickering dis-
| Bad display driv-
| Check the display
| Update to latest display
| | play
| ers
| driver version.
| driver for laptop.
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| Screen refresh rate
| Check the rate
| Most laptops use non-
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| selected.
| interlaced 60Hz.
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| Interlaced settings cause
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| flicker.
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| Loose connections
| Check the connec-
| Disassemble the laptop to
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| between display
| tions.
| get access to the data and
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| and motherboard
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| power cables.
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| | Sticking keys
| Keyboard might
| Clean keyboard tops.
| If cleaning the keyboard
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| be dirty or have
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| with a data-rated vacuum
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| debris on under-
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| cleaner or an antistatic
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| side of keys
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| cleaner doesn’t solve the
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| problem, replace the stick-
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| ing keys or replace the
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| keyboard.
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| | Intermittent
| Laptop not pick-
| Reorient the laptop
| If moving the laptop
| | wireless
| ing up a strong
| display screen or the
| around at the current loca-
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| enough signal
| laptop.
| tion does not improve sig-
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| nal strength, try a different
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| channel on the router.
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Battery not Battery worn out Try running the sys-
charging tem on AC power
only.
If the system will run on AC power, replace the battery.
If system will not run on AC power, test the AC adapter and replace if defective.
| Ghost cursor
| Laptop screen
| Adjust the mouse
| Use mouse pointer options
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| refreshes too
| pointer visibility.
| such as Display Pointer
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| slowly
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| Trails And Show Location
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| of Pointer When I Press
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| the Ctrl key.
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No power Battery worn out Try running the sys-
tem on AC power
only.
If the system will run on AC power, replace the battery.
If the system will not run on AC power, test the AC adapter and replace if defective.
AC adapter failure Test the AC adapter. Replace if defective.
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| Chapter 9: Troubleshooting 199
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| | Symptom
| Possible Cause
| Items to Check
| Typical Solution
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| | Num lock indi-
| Typing with letters
| Use the Fn key to
| If the keyboard won’t switch
| | cator lights
| on right side of
| switch the keyboard
| back to normal mode or if
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| keyboard displays
| back to normal
| Num lock lights don’t work,
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| numbers instead
| mode.
| replace the keyboard.
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| | No wireless
| Wireless adapter
| Turn wireless adapt-
| Look for push button or
| | connectivity
| turned off
| er back on.
| pressure-sensitive button
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| on front or top of laptop or
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| as Fn key on keyboard.
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| | No Bluetooth
| Bluetooth adapter
| Turn on Bluetooth
| Use the Bluetooth Settings
| | connectivity
| turned off
| adapter.
| in the Control Panel (see
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| Figure 9-9).
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| Bluetooth discov-
| Enable Bluetooth
| Use the Bluetooth Settings
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| ery disabled
| discovery.
| in the Control Panel.
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| Bluetooth device
| Enable connections
| Use the Bluetooth Settings
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| connections not
| from Bluetooth
| in the Control Panel.
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| allowed
| devices.
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| | Cannot display
| External display
| Detect external dis-
| XP: Display properties.
| | to external
| not detected
| play.
| Vista: Personalization menu.
| | monitor
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| 7: Screen Resolution menu.
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Figure 9-9 The Bluetooth Settings dialog on a system with discovery, connections, and the adapt-er turned off.
200 CompTIA A+ Quick Reference
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