Hi folks, I installed vista, Which it seemed to install okay, Then i was installing the updates, I came back about an hour later to see a black screen with a message saying to place the vista installation disc in the dvd drive, restart, then go to system repair,that some files are missing or corrupt, have tried doing that but nothing happens, Have tried restarting tapping f2-f8-f10 nothing happens, I have even tried the vista repair disc, still nothing,the only thing i can do when i press enter is a memory diagnostic test which comes up clean,Its a dell laptop inspiron 1100 20GB 640mb ram, Thanks patch41.