Itanium-based 64-bit drivers are not compatible with x64-based versions of Windows because they are compiled specifically for the Itanium operating system. Drivers that are written for Itanium-based computers will not install correctly on x64-based versions of Windows.
To obtain device drivers that are not included on the installation CD for x64-based versions of Windows, use these methods in the following order:
- Method 1 On the Microsoft Windows Update Web site, search for a driver that is certified by the Windows Hardware Quality Labs (WHQL). To search for a WHQL-certified driver, click Start, click Windows Update, and then follow the instructions on the Windows Update Web site. Alternatively, you can visit the following Microsoft Web site:
- Method 2
Obtain a WHQL-certified driver from the device manufacturer's Web site. For information about how to search for a WHQL-certified driver on the device manufacturer's Web site, contact your device manufacturer.
- Method 3Obtain a beta or non-WHQL-certified driver from the device manufacturer.
Important We do not recommend drivers that are not WHQL-certified. Microsoft cannot guarantee the compatibility of device drivers that are not WHQL-certified.
Note It is the responsibility of the specific hardware or software vendor to make sure that programs and device drivers are compatible with x64-based versions of Windows.
For information about your hardware manufacturer, visit the following Web site:Important The driver and the driver Setup program must be 64-bit compatible.
If you experience problems when you try to install a 64-bit driver that is not included with 64-bit versions of Windows, make sure that the driver's .inf file is correctly decorated.
For more information about the device driver .inf file decoration requirements, click the following article number to view the article in the Microsoft Knowledge Base:
Technical support for Windows x64 editionsYour hardware manufacturer provides technical support and assistance for Microsoft Windows x64 editions. Your hardware manufacturer provides support because a Windows x64 edition was included with your hardware. Your hardware manufacturer might have customized the Windows x64 edition installation with unique components. Unique components might include specific device drivers or might include optional settings to maximize the performance of the hardware. Microsoft will provide reasonable-effort assistance if you need technical help with your Windows x64 edition. However, you might have to contact your manufacturer directly. Your manufacturer is best qualified to support the software that your manufacturer installed on the hardware.
For product information about Microsoft Windows XP Professional x64 Edition, visit the following Microsoft Web site: