I DISCOVERED MY PROBLEM A FEW DAYS AGO WHEN I COULD NO LONGER VIEW VIDEOS ON YOU TUBE AT FULL SCREEN, IT WOULD FREEZE BUT I COULD STILL HEAR AUDIO, I COULD STILL WATCH THEM ON SMALL SCREEN. I THEN REMOVED FLASHPLAYER 9 AND TRIED TO INSTALL THE DEBUGGER VERSION,(I READ ON A POST THAT THIS WOULD FIX MY PROBLEM) BUT BEING INEXPERIENCED IN ALL OF THIS IT DID NOT WORK. I THEN TRIED FLASH PLAYER 8 AND THAT DID NOT WORK EITHER, I KEPT TRYING DIFFERENT THINGS I READ AND ONLY BECAME VERY CONFUSED. NOW I CANNOT PLAY ANY VIDEOS, I RECEIVE A MESSAGE SAYING I DO NOT HAVE THE LATEST FLASH AND WOULD I LIKE TO DOWNLOAD IT? I TRY TO DOWNLOAD BUT NOTHING HAPPENS, IT LOOKS LIKE IT IS LOADING BUT IT NEVER DOES, I WENT INTO ADD/REMOVE PROGRAMS AND I CAN SEE THAT FLASH 8 IS STILL THERE BUT WHEN I TRY TO REMOVE IT I GET THIS ERROR 1721 MESSAGE, IT STATES, THERE IS A PROBLEM WITH THIS WINDOWS INSTALLER PACKAGE, A PROGRAM REQUIRED FOR THIS INSTALL TO COMPLETE COULD NOT BE RUN CONTACT SUPPORT PERSONAL OR PACKAGE VENDOR. THEN A FEW MINUTES LATER I GET ANOTHER MESSAGE THAT SAYS FATAL ERROR HAS OCCURED. I TRIED GOING INTO SAFE MODE TO REREGISTER THE WINDOWS INSTALLER SERVICE AND THEN I TRIED TO RUN SYSTEM FILE CHECKER. NEITHER ONE OF THESE WORKED. SO NOW I CANNOT GET RID OF THE OLD FLASH PLAYER OR DOWNLOAD A NEW ONE. I WAS ABLE TO PLAY VIDEOS AT FULL SCREEN WITH NO PROBLEM UP UNTIL A FEW DAYS AGO. THE TROUBLE COULD HAVE STARTED WHEN I VISITED A WEBSITE THAT SAID I NEEDED THE NEW FLASH PLAYER TO VIEW A VIDEO, MAYBE I JUST DID NOT INSTALL THE DEBUGGER VERSION CORRECTLY AND THEN I JUST KEPT TRYING THINGS UNTIL I REALLY MESSED IT UP. I DONT HAVE MUCH EXPERIENCE IN THIS STUFF. EVERYTHING I TRIED I READ ON A FORUM. PLEASE HELP ME TO SET EVERYTHING BACK THE WAY IT WAS. I DONT EVEN KNOW WHAT I DID WRONG. WHEN I TRIED TO INSTALL THE DEBUGGER FOR FLASH 9 I WAS NOT SURE HOW TO UNZIP THE FILE AND THEN INSTALL IT. PLEASE HELP ME BEFORE MY 2 YEAR OLD DAUGHTER REALIZES SHE CANT WATCH HER KITTY CAT VIDEOS ON YOU TUBE. BRYAN