For whatever reason, Finder can stop working sometimes. If you’re having trouble with Finder, hopefully these steps will help you.
Most software issues can be resolved by a simple reboot. You should do this before anything else.
2. Enable a Guest account
(System Preferences-Users and Groups-+ button) This step is to see whether the problem is isolated to just your account.
3. Repair your disk
(Applications-Utilities-Disk Utility-First Aid-Repair Disk) After repairing the disk, restart the system and see if the problem persists.
4. Repair disk permissions
(Applications-Utilities-Disk Utility-First Aid-Repair Disk Permissions)
5. Delete Finder’s preferences
Because Finder isn’t working properly, you probably won’t be able to access the preference files using a Finder window. To delete Finder’s preferences, open Terminal by searching for it with Spotlight.
Once in Terminal, enter the following command and press return. (Use Terminal at your own risk!)
6. Reinstall your Mac OS X version
At this point, you’re running out of options. If this step doesn’t work, you’ll be left with no choice but to do a clean install.
Put your usb or dvd copy of your current OS version into your machine. Restart your computer. When it shuts off, start holding the alt/option key. You’ll be given the option to boot off of your install disk or your hard drive, choose your install disk. Next, choose to install Mac OS X.
7. Last resort — clean install
This will delete everything on your computer!
Put your usb or dvd copy of your current OS version into your machine. Restart your computer. When it shuts off, start holding the alt/option key. You’ll be given the option to boot off of your install disk or your hard drive, choose your install disk. Next, choose Disk Utility from the options. Select your harddrive and then press erase. Once this is complete, get out of disk utility and install a fresh version of Mac OS.