Device Manager displays a graphical view of the hardware that is installed on your computer. Use this tool to resolve any possible device conflicts or to identify incompatible devices that may be the cause of the startup problem.

To start Device Manager, follow these steps:

1.	Click Start, right-click My Computer, and then click Manage.
2.	Expand System Tools, and then click Device Manager. The devices that are installed on your computer are listed in the right pane. If a symbol is displayed next to a device, there may be a problem with the device. For example, a black exclamation point (!) on a yellow field indicates that the device is in a problem state. Note To disable a device in Device Manager, right-click the device, and then click Disable.
3.	Investigate possible device conflicts. To do so, double-click the device in the right pane, and then click the Resources tab. If a device conflict exists, it is listed under Conflicting device list. Note the Use automatic settings check box. If Windows successfully detects a device, this check box is selected, and the device functions correctly. However, if the resource settings are based on Basic Configuration n (where n is any number from 0 to 9), you may have to change the configuration. To do so, either click a different basic configuration from the list or manually change the resource settings. WARNING This procedure may require that you change the computer's complementary metal oxide semiconductor (CMOS) settings and the basic input/output system (BIOS) settings. Incorrect changes to the BIOS of the computer can result in serious problems. Change the computer's CMOS settings at your own risk. If Windows cannot resolve a resource conflict, verify that the computer is configured to permit Windows to enumerate the devices in the computer. To do so, enable the Plug and Play OS setting in the Setup tool of the computer's BIOS. To change the computer's BIOS settings, see the computer documentation or contact your computer manufacturer.
4.	If you identify a problem device, disable it, and then restart the computer in normal mode. If the computer starts correctly, the device that you disabled may be the cause of the startup problem. Make sure that the device is listed on the Windows Server 2003 Hardware Compatibility List (HCL) and that it is installed correctly. Also, contact the manufacturer to report the behavior and to obtain information about possible updates that can resolve the startup problem.

For additional information about how to configure devices in Device Manager, click the following article number to view the article in the Microsoft Knowledge Base: