Freezing Macbook

[HCC]

My Macbook freezes once I close an application. I cannot access the dock.

Also, the programme is not shown in the Force Quit window.

I am also unable to shut down, sleep or restart after closing an application.

To anyone who can help, thanks a lot.

[simsaladimbamba]

What Mac OS X version do you run on what Mac?

To find out what Mac OS X version you run, click > About This Mac:

To find out, what exact Mac model you use, click > About This Mac > More Info > Hardware Overview:

To see a more elaborate image explaining the above steps, click here.
To see a more detailed video tutorial showing the above steps, click here (2 MB, 23s, .mp4).

[HCC]

Originally Posted by simsaladimbamba

What Mac OS X version do you run on what Mac?

To find out what Mac OS X version you run, click > About This Mac:

Image

To find out, what exact Mac model you use, click > About This Mac > More Info > Hardware Overview:

Image

To see a more elaborate image explaining the above steps, click here.
To see a more detailed video tutorial showing the above steps, click here (2 MB, 23s, .mp4).

Mac OSX Version 10.6.8

MacBook 5,2