Language and Drivers Setup Help

1st. Hello guys, i format my computer HP Pavilion dv6-3298en, and installed Windows Home Premium x64, and downloaded and installed all the drivers form my computer from HP's website cause i have lost them, and i 'm not sure if all the drivers are correct, and i also saw i installed some drivers which where useless for my computer, but where in the drivers for my computer in HP's site. Can i verify somehow (free of charge i prefer) if i have all the drivers needed, if they are correct and remove the additional ones. 2nd. My computer doesn't recognize Greek. i can write in Greek but my songs, files etc are shown e.x 5 Ç®½Ô¿Óñ. (also write in notepad in Greek but can't save it cause characters are in Unicode format. Thanks, Tsimo

I'd start over and follow these steps to get a perfect Clean Reinstall - Factory OEM Windows 7 using the drivers provided by the latest Win7 installer provided, and later quickly updated via optional Windows Updates. Only import drivers which are missing after all Updates are done.

Did you have a Greek version of Home Premium installed previously?

no an English.