Hello everyone, I really need your help. My Sony Vaio laptop (model: SVE151G13M) did not recognize my dvd/cd-rom anymore and dumb as I am, I tried to fix this myself. On the website of Microsoft I read a step-by-step guide on how to remove the upper filters and lower filters to fix this problem. However, I may have removed too many, or the wrong filters. Now my laptop does not want to reboot anymore due to missing files. I read that I can recover the system by pushing the ASSIST button, choose troubleshoot/recovery etc. The system asks me to rescue my documents first, and of course that is my main goal.. Save as many files, photos, documents and videos as I can. I attached an external hard disk with plenty of space on there, chose to rescue the files and waited. However, it is not working and I got an error message multiple times now. Does anyone know how to replace the deleted upper filters and lower filters, without having to reboot or recover the entire system and loose all of my files? I read something about 'Last known good configuration' but I cannot find this in the options when I press ASSIST. Please, I am desperate since I am also in the process of writing my master thesis and really need this computer..