Hi, recently I reinstalled my window 7 due to some start up problems. The re-installation was using the optical drive installed and successfully done installation on my window 7. One thing I found, after that installation, I tried to run some other disc from music to photo collection in those burnt dvd but out of 10 , maybe one can be read. Anyone here got such issue? I tried all ways like deleting upper & lower filters, reinstall driver and etc...still same, who can advise what's the cause out from it?