Internet Botched

I have a PowerBook G4 from 2005.

I opened Firefox this morning, homepage failed to load, no other pages would load - internet at full bars.

Tried Safari, same thing, nothing would load.

I erased all the cache from the HD Library (as I remember that being advise when a similar issue occured a few years ago), and restarted the computer. Now, only certain web pages load, BUT in a prehistoric form, and at dial-up speed -- no images/graphics are able to load. You can google search, but if you click 'image' option, it just loads blank rectangles. It's like bare bones internet, no graphics. What might I have deleted when wiping out the cache, and how can I get full internet back?