I recently downgraded my Sony Vaio FZ410E/B (http://www.amazon.com/Sony-VGN-FZ410E-Laptop-Processor-Premium/dp/B0011NJ85S) notebook from Vista to XP Professional 64-bit. My main problem is finding a compatible 64-bit Sigmatel High Definition Driver. Other than that driver, I need to find three more drivers to make the system functionality like that of Vista.

I have searched the Internet for many days and downloaded over 100 versions of the Sigmatel driver, without any success.

Please help if you can. Any assistance is appreciated.

Support Information:
Device Type: Sound Card
Manufacturer: SigmaTel
Model: High Definition Audio Codec For Sony Vaio FZ4 Series
Interface: SCSI
Operating System: Windows XP Professional x64
Age of Device: < 6 months old
FCCID:

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=1690&qa5=19&qa7=1501&dp=0.5&qm0=High+Definition+Audio+Codec+For+Sony+Vaio+FZ4+ Series&jmd=and&fzz=d) | Find it with Google (http://www.google.com/custom?client=pub-4727129938051271&forid=1&hl=en&ie=ISO-8859-1&oe=ISO-8859-1&flav=0001&sig=t06hRycrxd-fw_05&q=SigmaTel+Sound+Card++High+Definition+Audio+Codec +For+Sony+Vaio+FZ4+Series+Windows+XP+Professional+ x64+) | Research manufacturer SigmaTel (http://members.driverguide.com/index.php?action=getinfo&companyid=1690)

XP x64 drivers are very rare and difficult (if not impossible) to find. This ftp link might help:

ftp://ftp.vaio-link.com/PUB/OS/XPDOWNGRADE/

Remember that notebooks cannot use generic drivers as they will fail install.