I've wiped origin fully off my pc & reinstalled it all & still origin wont let me update my games.
Please help because I don't know what to do
Bit of an odd one, would you mind taking a look at this help article and trying the steps listed: https://help.ea.com/en-us/help/origin/origin/my-game-downloaded-through-origin-but-will-not-install/
Try running Origin as an administrator:
This runs the Origin client as an administrator account, and should let the game install.
Try lowering the User Access Control settings: