Well after fixing the problem with the sata cable lock,i have now another problem.My DVD is missing from my computer ,i have taken out the Samsung one that was there as i thought it was faulty ,i think now it might be OK,i replaced it with a lg model from an older PC but i know its hardly been used.i put the DVD in the drive the led light flashes as if to read the disk ,but then it goes of and that's it . I put the Samsung back in and tried to run the install disk but of course that wont run either. also i can not tell hat jumper is what as the is no stamp to indicate this.What do you guys think the problem is please and would i be better of to buy a sata dvd burner.