Usepmtimer windows xp

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Hello, all! Sometimes it can cause problem with precision time measurements on CPUs which support powersaving modes by changing clock frequency. Your manufacturer is best qualified to support the software that your manufacturer installed on the hardware. If you purchased a Windows x64 edition such as a Microsoft Windows Server x64 edition separately, contact Microsoft for technical support. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

Need more help? Expand your skills. Get new features first. Was this information helpful? Yes No. Thank you! Any more feedback? The more you tell us the more we can help. Can you help us improve? Resolved my issue. Clear instructions. Easy to follow. This switch loads the kernel debugger when you start the operating system. The switch remains inactive until a Stop message error occurs.

With this switch, you can use the COM port for normal operations while Windows is running. If Windows crashes, the switch converts the port to a debug port. This action turns on remote debugging. This switch turns on the kernel debugger when you start Windows.

The switch can be activated at any time by a host debugger that is connected to the computer, if you want to turn on live remote debugging of a Windows system through the COM ports. Use this switch when you are debugging problems that are regularly reproducible.

For more information about remote debugging, click the following article number to view the article in the Microsoft Knowledge Base:. This switch specifies the communications port to use for the debug port, where number is the communications port, such as COM1, that you want to use. Otherwise, the switch uses COM1.

If you include this switch in the Boot. This switch specifies the amount of RAM, in bytes, that Windows can use.

In this scenario, Windows would not start. This switch disables the bitmap that displays the progress bar for Windows startup. The progress bar appears just before the logon prompt. This switch turns off debugging. This scenario can cause a Stop error if a program has a debug hardcoded breakpoint in its software. This switch sets the number of processors that Windows will run at startup. With this switch, you can force a multiprocessor system to use only the quantity of processors number that you specify.

This switch can help you troubleshoot performance problems and defective CPUs. For xbased systems, this switch stops the operating system from dynamically assigning hardware input, hardware output, and interrupt request resources to Peripheral Connect Interface PCI devices. With this switch, the BIOS configures the devices. This switch turns off serial and bus mouse detection in the Ntdetect.

Use this switch if you have a component other than a mouse that is attached to a serial port during the startup process. Ports may be separated with commas to turn off more than one port. By default, the Windows Loader screen only echoes progress dots. With this switch, you can define the actual hardware abstraction layer HAL that is loaded at startup.

This switch is useful to try out a different HAL before you rename the file to Hal. This switch is also useful when you want to try to switch between starting in multiprocessor mode and starting in single processor mode.

With this switch, you can define the actual kernel that is loaded at startup. With this switch, you can switch between a debug-enabled kernel that is full of debugging code and a regular kernel.