HELP I KEEP GETTING THIS MESSAGE ''CANNOT DISPLAY...

Question

I HAVE A DESKTOP WITH NO PROBLEMS AND A WIRELESS LAPTOP, NO PROBLEMS BUT I TRIED MY OLD LAPTOP AND I DEEP GETTING A MESSAGE ''CANNOT DISPLAY WEBPAGE'' THE CONNECTION IS GOOD AND STRONG, I'M SO FED UP WITH THIS, I HAVE TRIED MANY DIFFERENT THINGS THAT I HAVE READ BUT NOTHING WORKS!!! ANY IDEAS PLEASE LET ME KNOW!!! OH IT'S MICROSOFT WINDOWS XP PROFESSIONAL. IT WAS WORKING GREAT LAST WEEK.

THANKS SO MUCH!!!
JOANN