Why does nothing work after I randomly changed some file permissions?

Posted by Josh B on Ask Ubuntu See other posts from Ask Ubuntu or by Josh B
Published on 2012-07-01T16:03:51Z Indexed on 2012/07/02 9:23 UTC
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permissions

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sudo

Ok so last night i was trying to set permissions to some folders in my File System, since apparently im not an admin on my own computer. And now everything got messed up today and i don't know what to do..

I lost my internet, the icon is not showing in the taskbar anymore.
I lost my sound, there is no sound devices listed when i go into the sound menu.
I can not log into root anymore, it gives me "sudo: must be setuid root"
I can not plug anything in anymore, it will not recognize flash drives or external hard drives.
It gives me a Internal Error message everytime i log in
It doesn't let me log into the Grub screen anymore on boot up.

What did i do? I have a lot of files on here i wish to put on a flash drive but it won't recognize it.

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