I had to do a full factory recovery on my acer aspire 4520, running on windows vista service pack 2. My dvd\cd-rom drive has been missing for months and thought the update would help. Still I can't seem to have this issue resolved. I really don't want to send it in to acer for a $200 repair. Device manager doesnt list and dvd\cd-rom drive or hardware. my laptop won't play or run any dvd\cd. The box lights up and makes noise like it's going to work, then theres nothing. I have run Microsofts fix it, and says the drive is missing. I run the hardware its says no hardware or drive detected. I go to acer to reinstall the drives, but they don't have the one i need listed, and recommend i send it in. Is there anyway i can reinstall the device and\or hardware? With out having to send it into acer? I'm willing to try and fix it, I just need someone with computer knowledge to help me with how and what to do. Thank you to anyone who trys to help!