Installing Windows® 7 Beta on HP Business Desktops

Appendix A: Known Anomalies
Drive Encryption
Anomaly: Systems with BitLocker enabled might lock when resuming from
hibernation.
Description: Tested models running Windows 7 Beta would lock up when
attempting to resume from hibernation with disc encryption enabled.
Affected Systems: All models
Resolution: While evaluating Windows 7 Beta, do not enable disc encryption.
This should be addressed in later Windows 7 builds.
Unrecognized devices in Device Manager
Anomaly: Several devices aren’t recognized after installing Windows 7 Beta
Description:, PCI Serial Port, PCI Simple Communications Controller, and
Unknown devices lack drivers in Device Manager.
Affected Systems: All models
Resolution: Run Windows Update. After Windows Update is run, PCI Serial Port
will remain under “Other Devices”.
Upgrade
Anomaly: Windows 7 Beta Upgrade is extremely slow
Description: When selecting the Upgrade option during Windows 7 installation,
process stalls or is extremely slow.
Affected Systems: All models
Resolution: Select Custom Install to perform a clean install when installing
Windows 7 Beta on HP Business Desktops. Remember to backup all data prior to
installing any OS.
USB devices
Anomaly: Some USB devices do not work after resuming from Sleep or
Hibernation.
Description: USB devices, especially those behind a hub, will not function after a
system resumes from Sleep or Hibernation.
Affected Systems: All models
Resolution: Follow the steps outlined in Microsoft KB article #928631
(http://support.microsoft.com/kb/928631).