How do you ask if someone has a computer in french?
Translation of Do you have a computer: Est-ce que vous avez un ordinateur?
Comment allez-vous is the standard phrase you would use when you want to ask someone how they are in French. This phrase is most commonly used when you are talking to strangers, elders, or someone in a formal setting. Comment ca va is a far less formal way to ask how someone is doing in French. You would reserve this phrase for friends and family members.
What do you do if you get a virus on your computer and you give it to someone to get rid of the virus and they wipe everything off your computer?
It depends on who you're speaking with: "parles-tu français?" (is said to a friend, someone "familiar" or someone younger) "vous-parlez français?" (someone older, of higher position - like an elder, boss or teacher) "tu parles français" and "vous parlez français" are also accepted. To ask if French is generally somewhere (like in a store or a country) you can ask "On parle français ici?"
It depends on your computer. I have a Mac and to change languages you click "System Preferences" in the toolbar or search for it in Spotlight. Under the 'Personal' tab there is a link for Language & Texts. There you should be able to find you desired language :) Ask the question again if this doesn't answer what your asking and then someone can teach you how to format it for your specific computer. :)