If I right click on an image, or link, and try and save it, the box pops up as normal, but it's completely blank. If I try and type any locations in the bar at the top, it says "___ is currently unavailable".
This happens in pretty much all the browsers I've got/tried. It's only specific to browser-related programs as far as I can tell (for example, if I open Notepad and try and save a file, that works perfectly fine).
Firefox:

Chrome:

And Internet Explorer crashes when I try and save images/links (the save as box doesn't even open)!

Any help would be greatly appreciated!