I accidentally put the language of my e-reader PRS 300 in french and I need the language to be in English, I need to know how to change the language to English

Accueil (Home) > Parametres (Settings) > Langue du Menu (Menu Language) > Anglais (English)

Go into Control Panel, select Region and Language, choose a display language by installing English first.
You may need your Windows Installation Disc!

yes, go to language settings and set to desired language

thats just how the game is

You said "I have not fully completed the initial set up.." So finish the setup and once complete you can change the settings by clicking Start -> Control Panel->Regional and Language settings,and selecting English.(you may be required to download addition language packs)

Open Regional and Language Options by clicking the Start button, clicking Control Panel, clicking Clock, Language, and Region and then clicking Regional and Language Options.
Click the Keyboards and Languages tab.
Under Display language, choose a language from the list, and then click OK.
Obviously you'll have to work out the French equivalents of the options but should be fairly obvious

se domage (I think it means too bad, and it's the only French I know) :-)

Memorize these numbers: Feat 790=English 791=French 792=Spanish

Welcome back to English.

Carl

Go to the Réglages option, then to Langue and select English.

You'll have to obtain a copy of the Magellan Roadmate manager disks, load them into your computer, connect the GPS to your computer using the USB cable and the use the "Roadmate Manger settings" to change the language.