My brother in law has an antiquated Sony Vaio 650 mhz PCG-F807K which he relies on while in collage. For the last 4 months he has been experiancing problems while attempting to play DVD’s. The problem appears to have come up suddenly, and apparently all on its own. No relevant changes have been made to the system immediately before the DVD problem. He was using a DVD region free patch of unknown origin as it was deleted recently. Does anyone have any ideas other than having the DVD and read head cleaned? He says that even when he loads a DVD-RW the system acts like there is nothing there. Thanks.