Hi, I replied to the posting below but am not sure if I'll get replies. So I'm creating a new post. I hope that's OK. I followed the instructions from LookinAround (https://www.techspot.com/vb/topic137666.html) but it did not help. The thread-- https://www.techspot.com/vb/topic27616-2.html#post840867 My computer- Windows Vista Home, Toshiba Satellite . The Problem- So I noticed that my DVD drive wasn't working or "reacting" when I put any type of disc into it. I first noticed this a few months ago. What I tried- -deleting the filter drivers -uninstalling the driver for the DVD drive in the Device Manager (Which said it's working properly?) -using the Microsoft Automated "Fix it" feature -and even installing a new trial version of Win DVD. (Then uninstalled/reinstalled it) But no improvements after restart. Over time, I have deleted various items after doing Hijack This scans. IF I stupidly deleted anything related to the DVD drive, would they have reloaded after restart? Or are they gone for good? I want to use my recovery discs (because it's time to clean things up), but I can't if the DVD drive doesn't work. Please help. I've tried some things but haven't been able to figure it out. Thanks Neil AND... Just went back into the registry editor... I don't see Upper and Lower filter listed anymore. I don't see any .bat files either. Here's what it says- NAME TYPE DATA (Default) REG_SZ Computer Class REG_SZ Computer Class Desc REG_SZ @%SystemRoot%\System32\SysClass.dll,-3000 Icon Path REG_MULTI_SZ %SystemRoot%\System32\setupapi.dll,-27 Installer32 REG_SZ SysClass.dll,ComputerClassInstaller NoInstallClass REG_SZ 1 I sense that this is bad. Please help a sad soul.