Driver for Sony VGC-VA1 Audio

Used to have XP (maybe 32 bit ?)

Now put on Wins 7 64 bit and no sound

High Def Audio Driver (VEN 8384 DEV 7661) has exclamation mark - windows update says best driver is installed

Also multimedia device with exclamation mark (VEN 1131 DEV 7133)

Have tried various downloads without success :cry:

Thanks