When the computer is on and i put in a dvd the dvd driver doesn't read it so i can't open it from My Computer. But if i restart the computer the dvd driver is able to read the dvds. My dvd driver is this TSSTcorp CDDVDW SH-S223B ATA Device as Speccy says. i have it for 3 years and this problem started 7-8 months ago. My motherboard has 4 Sata sockets. In the 1st i have connected my master HDD, in the 2nd my slave HDD and in the 3rd the DVD Driver. I don't have anything connected to the 4th. if you need any other info let me know.