I am running the Windows 7 beta on my 4 year old Laptop, It’s not recommended but it does run well, using the Windows XP display and ethernet drivers it is a well functioning machine that doesn’t act much different from when it had Windows XP installed, however there is an odd issue with the sound card driver from Windows update that I will explain.
The WHQL Certified Conexant AC-Link Audio driver from Windows Update is installed automatically on this machine, it has a Driver Date of 18/02/2004 and a driver version of 220.127.116.112.
The Laptop in question is a HP NX9010. After the driver installation the sound works as expected, although sometimes has some slowness about it, after a few reboots however it will get to the Welcome Screen and lock up with the sound stuttering constantly on the Welcome Screen sound, rebooting will not make a difference and the same thing will occur, upon booting in safe mode and disabling or uninstalling the driver everything will be fine and the system will not lock up at the Welcome Screen.
I tried the old Windows XP drivers knowing they shouldn’t work and they didn’t, some versions either refused to install, caused stop errors or simply had the same lockup problem.
However I tried the most simple solution and disabled the Windows Bootup Sound from the Sounds tab of the Sound Control Panel item, since then there have been no lockups and there have been no issues with the sound.