This has nothing to do with Microsoft but with your PC's maker. That is why the message tells you to check "for a firmware update with your system vendor". In most cases, the same result would be achieved by getting whatever BIOS updates are available from the mainboard's maker. If it's a major brand name (e.g. Dell, HP, Toshiba) their website should have whatever updates are available.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]