I took my computer in to get fixed, but now that it's back, all my folders are automatically marked as read-only, even the ones I made just moments ago. Whenever I turn read-only off, it instantly changes back to read-only again. I run Vista and I have Administrator-level privileges, so I don't understand what's going on. I hope I can fix this without having to take this back to the repair shop.
Well the simplest thing would be to call them, tell them what has happened, and ask them to guide you in how to fix it (since it's something they did, not you, and they should fix it).