Windows 8.1/Windows RT 8.1
System Configuration (Run Command – msconfig) is a tool that
can help identify problems that might prevent Windows from starting correctly.
Using System Configuration, you can start Windows with common services and
startup apps turned off and then turn them back on, one at a time. If a problem
doesn't occur when an app or service is turned off, but does occur when the
service is turned on, then that service could be the cause of the problem.
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Open System Configuration by swiping in from the right edge of
the screen, tapping Search (or if you're using a mouse,
pointing to the upper-right corner of the screen, moving the mouse pointer
down, and then clicking Search), entering msconfig in
the search box, and then tapping or clicking msconfig. You might be asked for an admin password or to
confirm your choice.
The following table describes the tabs and
options that are available in System Configuration:
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Tab
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Description
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General
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Lists choices for
startup configuration modes:
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Normal startup. Starts Windows in the usual manner. Use this mode to start
Windows after you're done using the other two modes to troubleshoot the
problem.
·
Diagnostic startup. Starts Windows with basic services and drivers only. This mode
can help rule out basic Windows files as the problem.
To
start Windows in Diagnostic startup mode
·
Selective startup. Starts Windows with basic services and drivers and the other
services and startup apps that you select.
To start Windows in
Selective startup mode
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Boot
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Shows configuration
options for the operating system and advanced debugging settings, including:
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Safe boot: Minimal. On startup, opens the Windows graphical user interface (File
Explorer) in safe mode running only critical system services. Networking is
disabled.
·
Safe boot: Alternate shell. On startup, opens the Windows command prompt in safe mode
running only critical system services. Networking and File Explorer are
disabled.
·
Safe boot: Active Directory repair. On startup, opens File Explorer in safe
mode running critical system services and Active Directory.
·
Safe boot: Network. On startup, opens File Explorer in safe mode running only
critical system services. Networking is enabled.
·
No GUI boot. Doesn't display the Windows Welcome screen when starting.
·
Boot log.
Stores all information from the startup process in the file
%SystemRoot%Ntbtlog.txt.
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Base video.
On startup, opens File Explorer in minimal VGA mode. This loads standard VGA
drivers instead of video drivers specific to the video hardware on the PC.
·
OS boot information. Shows driver names as drivers are being loaded during the
startup process.
·
Timeout.
Determines how long the boot menu is displayed before the default boot entry
is automatically selected. The default is set to 30 seconds.
·
Make all boot settings permanent. Doesn't track changes made in System
Configuration. Options can be changed later using System Configuration, but
must be changed manually. When this option is selected, you can't roll back
your changes by selecting Normal startup on the General tab.
Advanced options:
·
Number of processors. Limits the number of processors used on a multiprocessor
system. If the check box is selected, the system boots using only the number
of processors in the drop-down list.
·
Maximum memory. Specifies the maximum amount of physical memory used by the
operating system to simulate a low memory configuration. The value in the
text box is megabytes (MB).
·
PCI Lock.
Prevents Windows from reallocating I/O and IRQ resources on the PCI bus. The
I/O and memory resources set by the BIOS or UEFI are preserved.
·
Debug.
Enables kernel-mode debugging for device driver development. For more info,
go to the Windows Driver Kit website.
·
Global debug settings. Specifies the debugger connection settings on this PC for a
kernel debugger to communicate with a debugger host. The debugger connection
between the host and target PCs can be Serial, IEEE 1394, or USB.
·
Debug port.
Specifies using Serial as the connection type and the serial port. The
default port is COM 1.
·
Baud rate.
Specifies the baud rate to use when Debug port is selected and the debug
connection type is Serial. This setting is optional. Valid values for baud
are 9600, 19,200, 38,400, 57,600, and 115,200. The default baud rate is
115,200 bps.
·
Channel.
Specifies using 1394 as the debug connection type and specifies the channel
number to use. The value for channel must be a decimal integer between 0 and
62, inclusive, and must match the channel number used by the host PC. The
channel specified doesn't depend on the physical 1394 port chosen on the
adapter. The default value for channel is 0.
·
USB target name. Specifies a string value to use when the debug connection
type is USB. This string can be any value.
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Services
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Lists all of the
services that start when the PC starts, along with their current status
(Running or Stopped). Use the Services tab to enable or disable individual
services at startup to troubleshoot which services might be contributing to
startup problems.
Select Hide all
Microsoft services to
show only third-party apps in the services list. Clear the check box for a
service to disable it the next time you start the PC. If you've chosen
Selective startup on the General tab, you must either choose Normal startup
on the General tab or select the service’s check box to start it again at
startup.
Warning Disabling
services that normally run at startup might cause some apps to stop working
or result in system instability. Don't disable services in this list unless
you know they're not essential to your PC's operation. Selecting Disable all won't disable some Microsoft services
required for the operating system to start.
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Startup
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You can now manage
startup items in Task Manager. The Startup tab in Task Manager lists apps and
services that run when the PC starts up, along with the name of their
publisher, status, and startup impact.
·
Open Task Manager by swiping in from the right edge of the
screen, tapping Search (or if you're using a mouse, pointing
to the upper-right corner of the screen, moving the mouse pointer down, and
then clicking Search), entering Task Manager in the
search box, and then tapping or clicking Task Manager.
Note Disabling apps
or services that normally run at startup might result in related apps or
services starting more slowly or not running as expected.
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Tools
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Provides a
convenient list of diagnostic tools and other advanced tools that you can
run.
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