A reinstall rarely fixes anything a repair doesn't. Your problems still suggest to me a rogue 3rd-party addin. There was at one stage a bad Skype update that played havoc with copying & pasting formatted content, which resulted in only plain text being pasted, and this sounds very much like that kind of thing. It's also possible your document template is corrupt - and reinstalling won't fix that.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]