hi i have had these two drives working fine for two years and all of a sudden, around the time i got tech help from ms my computer no longer would recognize the drives. they are there in BIOS but when i boot from there they atre still gone. i go to dev man and they are yellowed! and i can UNINSTALL and restart and i am back where i started from. i never have the "MS has detected new hardware" screen pop up but the drivers are back anyway with the yellow!. i have been communicating with MS about this for 2-3 weeks but it is a slow process VIA E-mail. i think i just need to D/L new drivers off the internet and install them and MAYBE all would be well but i can not find them. SONY says my mod number is not valid (both) but they are sony and the numbers are on the drives....any suggestions??