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  • Windows XP
Last response: in Windows XP
a b \ Driver
July 2, 2010 5:14:25 PM

On Acer TravelMate6231 de-installed op.sys.Vista and installed XP pro 32bit on SATA HDD.
ASPI configuration on AHCI controller.
Can not find driver for this device MATSHITA DVD-RAM UJ-850S on acer-euro site or panasonic site even on global site like it not exist!! even in discontinued ones!
Strange is that some data disc read and some not? which can be read on other computer...
problem happend after reinstalling xp...and instaling some flash usb drivers...

i tryed to reset with CD-dvd fix program from and tried to reinstall firmware but that was for Vaio...and can not be installed... even if is for same device....

really strange,but XP recognize it,and says it working fine!!!

More about : ata matshita dvd ram 850s

a b \ Driver
July 2, 2010 6:34:03 PM


i tryed to reset with CD-dvd fix program from

Was that Doug's Upper and Lower Filters fix? It's a prime suspect after installing USB drives. Go back to Doug's site and try it again.