dude dont reformat for lousy prob like dis...if u reinstall flash n it still dont work, or those browser settings, then just reinstall ur browsers
update ur windows also, update display drivers...
or get a copy of flash mx or something...not the player i mean the whole software wich is used 2 create flash files n install that...then u can uninstall it also but all the important browser components will remain
most prob u wont hafta do dese frantic measures but seriously dis prob aint worth a reformat
unless u got loadsa other probs n u dont mind backin up ur data n reinstalling evrything, dont reformat