I'm running Windows 7 and network discovery is turned off. When checking my files and folders they all say not shared, and I have password protected sharing on (have tried turning it off as well). But for some reason my computer is still accessible from any other computer on my network. I don't know what to do.
I ended up disabling a handful of services altogether to prevent it from doing this. Windows Media Player especially was a huge culprit when it came to trying to share stuff it wasn't supposed to.
To disable them pull up the services by searching for services.msc and running it as admin, or hit ctrl-alt-del and under the services tab there will be a "Services..." button to do the same. For some reason the the latter was the only way I could get mine open right now, but usually either way should work.
Once it's up look for and disable the following services:
After that just reboot and you should be good to go.
Several options and ideas.