Hi, if anyone can help, i will really appreciate it!

All of a sudden my internet explorer stops working after
about 10 minutes. The internet connection is there, like
the messenger programs, downloads, etc. are all normal. I
will be able to access websites for about 10 minutes, and
slowly, the graphics will not appear, then in the end, it
will give the "page cannot be displayed" notice. But the
weird thing is that the INTERNET CONNECTION IS THERE.
Anyone else had this problem? Please help! Thank you!