My work computer has an original version of Office 2007 installed, but it’s set to Slovak.🤣 Naturally, I want to switch it over to English, but I can't get it to work.
I've already adjusted all the regional settings and everything else seems fine, but when I try to change Office, I keep getting this "limited support" error:

I'm logged in as Administrator and have full access to everything.
Would it help to buy the English Language pack (though I think it might already be installed, so that shouldn't be the issue), or should I just uninstall Office and try to install English trial versions? My only concern is whether the original serial number will still work if I go that route.🤷
I've already adjusted all the regional settings and everything else seems fine, but when I try to change Office, I keep getting this "limited support" error:

I'm logged in as Administrator and have full access to everything.
Would it help to buy the English Language pack (though I think it might already be installed, so that shouldn't be the issue), or should I just uninstall Office and try to install English trial versions? My only concern is whether the original serial number will still work if I go that route.🤷
