I have an LG GH22NS40, i even updated it's firmware and it doesn't read/burn any disks.
When i put a CD/DVD in it it says its empty. The DVD Writer is shown in the device manager and the tray is working. (I have Windows 7 64 bit)
I also cleaned the Blue Eye inside it.
Please help me solve this problem
First thing I'd suggest, since it only takes a few seconds and is free, is to google "upper and lower filters" and then find Win 7 instructions. Follow those, and see if it solves the issue. Probably a long shot, but worth a try anyway.
If that doesn't do it, you're probably looking at a dead drive that needs to be replaced.