Troubleshooting Device and Hardware Conflicts Karl D Swenson Support Professional PSSJenga Team Micr

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Troubleshooting Device and Hardware
ConflictsKarl D SwensonSupport
ProfessionalPSS/Jenga TeamMicrosoft Corporation
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Overview

• Introduction
• A brief overview of Plug and Play (PnP)
• Understanding conflicts
• Identifying conflicts
• Resolving conflicts
• Driver issues when the system is reinstalled
  without original drivers
• Resources
• Questions

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Introduction

• What Is a Conflict?

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Overview of PnP Hardware Detection System

• System BIOS and CMOS
• ISA or older devices
• Windows Configuration Manager
• PnP devices
• USB devices
• Hardware tree
• HKEY_LOCAL_MACHINE\Enum registry key

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Understanding Conflicts

• The difference between hardware and driver
  conflicts
• Hardware conflicts generally involve resource
  allocation
• IRQ (interrupt request)
• DMA (direct memory access)
• Input/output
• Memory addresses
• Device conflicts involve drivers and software
  configuration

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Understanding Conflicts (2)

• When they can happen
• After new hardware installation
• After program installation
• During operating system upgrade
• Out of the blue

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Understanding Conflicts (3)

• Symptoms of conflicts
• Device does not function properly
• Sound does not work or repeats a sound
• System does not boot
• Port will not open
• Modem will not initialize

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Understanding Conflicts (4)

• Symptoms of conflicts (continued)
• Printer does not print
• Fatal events occur
• New devices are not detected
• Start up and/or shut down problems
• Problems entering standby and hibernation

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Understanding Conflicts (5)

• Reasons for conflicts
• Driver needs to be updated
• Driver files are corrupted
• Registry is corrupted
• Another program is conflicting with driver
• BIOS needs to be upgraded

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Understanding Conflicts (6)

• Reasons for conflicts (continued)
• Incompatible hardware
• Failing hardware
• Conflicting resources
• Insufficient resources
• Virus

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Understanding Conflicts (7)

• Driver files
• BIN files
• Drvdata.bin and Drvidx.bin
• INF files
• VXD files
• Vmm32.vxd
• Static vxd
• Other driver files

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Identifying Conflicts

• Tools to identify conflicts
• Device Manager
• Symbols

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Identifying Conflicts (2)

• Tools to identify conflicts (continued)
• Device Manager
• Symbols
• Common symbols in Windows 98 and Windows
  Millennium Edition (Me)
• Red X
• Exclamation mark on a yellow field
• White I on a blue field
• Yellow question mark
• New symbol in Windows Me
• Green question mark

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Identifying Conflicts (3)

• Tools to identify conflicts (continued)
• Device Manager
• Codes

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Identifying Conflicts (4)

• Tools to identify conflicts (continued)
• Device Manager
• View resources used

Right-click and select Properties on the shortcut
menu.
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Identifying Conflicts (5)

• Tools to identify conflicts (continued)
• Device Manager
• View resources used

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Identifying Conflicts (6)

• Tools to identify conflicts (continued)
• Device Manager
• Specific device Resources tab

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Identifying Conflicts (7)

• Tools to identify conflicts (continued)
• Microsoft System Information tool (Msinfo32.exe)

Windows Millennium Edition
Windows 98
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Identifying Conflicts (8)

• Tools to identify conflicts (continued)
• Msinfo32 in Windows 98
• Contains IRQ conflict and sharing information

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Identifying Conflicts (9)

• Tools to identify conflicts (continued)
• Msinfo32 in Windows Millennium Edition
• Contains conflict and sharing information about
  IRQ, DMA, input/output, and memory address

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Identifying Conflicts (10)

• Tools to identify conflicts (continued)
• Msconfig
• Steps for Msconfig/clean boot troubleshooting

Windows 98
Windows Millennium
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Windows 98
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Windows Millennium
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Identifying Conflicts (11)

• Tools to identify conflicts (continued)
• Removing devices
• Physically remove the hardware from the computer
• or
• Disable through Device Manager

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Identifying Conflicts (12)

• Tools to identify conflicts (continued)
• Safe mode
• What drivers load in Safe mode
• Ghost devices

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Identifying Conflicts (13)

• Tools to identify conflicts (continued)
• Linear troubleshooting
• Application
• Hardware
• Operating system

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Identifying Conflicts (14)

• Example Cannot print in Microsoft Word
• Print in Notepad or another application
• This can determine if it is an application-specifi
  c error
• Print in MS-DOS mode
• Isolates and verifies the integrity of the
  printer and port by printing directly to the
  hardware
• Print using generic text driver
• Isolates the driver as a potential problem area

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Device Driver Conflicts

• Tools to identify conflicts
• DirectX diagnostics (Dxdiag.exe)

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Device Driver Conflicts (2)

• Tools to identify conflicts (continued)
• Minimum functionality drivers
• Mouse
• Video
• Display
• Standard modem
• Generic (text only) print drivers

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Device Driver Conflicts (3)

• Tools to identify conflicts (continued)
• Parallel installation
• Installing Windows into an isolated folder
  without deleting either data or system
  configuration information about the existing
  installation.
• Verifies operation of the hardware drivers at the
  most basic level. No conflicting programs.
• The original system can be restored completely
  intact.

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Resolving Conflicts

• System Restore (Windows Millennium Edition only)

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Resolving Conflicts (2)

• System Restore (Millennium Edition only)
• Restore registry
• Scandisk
• Reboot

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Resolving Conflicts (3)

• Resource reallocation

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Resolving Conflicts (4)

• Remove and reinstall in Device Manager

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Resolving Conflicts (5)

• Remove and reinstall in Device Manager
• Update BIOS
• Hardware technicians

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Resolving Conflicts (6)

• Update or reinstall drivers

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Resolving Conflicts (7)

• Update or reinstall drivers (continued)

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Resolving Conflicts (8)

• Update or reinstall drivers (continued)

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Resolving Conflicts (9)

• Update or reinstall drivers (continued)

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Resolving Conflicts (10)

• Driver sources
• Device manufacturers Web site
• Computer manufacturers Web site
• Third-party driver clearinghouse
• Microsoft Hardware Compatibility List (HCL)
• http//www.microsoft.com/hcl/

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Resolving Conflicts (11)

• Resolving conflicts
• Using older drivers
• Pros
• Cons

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Driver Issues

• Scenario System is reinstalled w/o original
  drivers
• Computer was originally installed with Windows 95
  by the manufacturer. Video works well.
• Upgraded to Windows 98. Updates video drivers.
  Video works well.
• Upgraded to Windows Me. No video upgrade needed.
  Video works well.
• Formats and reinstalls Windows Me. Video works,
  but with less functionality than before.

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Resource Information

• Q133240 Troubleshooting Device Conflicts with
  Device Manager
• Q275012 Description of Green Question Mark in
  Device Manager
• Q262381 How to Troubleshoot Computer Hangs
  During Hardware Detection
• Q125174 Explanation of Error Codes Generated by
  Device Manager

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Resource Information (2)

• Q131900 Windows Hardware Compatibility List
• Q142984 How to Install New Hardware in Windows
• Q181966 System Configuration Utility Advanced
  Troubleshooting Settings
• Q267951 Description of the System Restore
  Utility in Windows Millennium Edition

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Resource Information (3)

• Q275499 Troubleshooting Device Driver Issues by
  Using the Driver Information Database
• Q281965 How to Troubleshoot Using the Msconfig
  Utility with Windows 98
• Q281995 How to Troubleshoot Using the Msconfig
  Utility in Windows Millennium Edition

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