After following all the steps in this thread, the update was successful. Marking as solved.

https://support.microsoft.com/en-us/help/971058/how-do-i-reset-windows-update-components

BIOS and chipset are all the latest version, updates still won't download/install

I believe I have... Is there an easy way to check which version I'm using now?

I have been having an ongoing problem with Windows Update for the past few months. Updates sometimes just refuse to download, and get stuck at 0%. I have managed to fix this a few times by opening up...