Since successfully installing the official HP Windows 7 upgrade on my Compaq Presario, I notice that in Word neither the Thesaurus nor the Research functions work. That is, when I select either the usual panel on the right of the screen comes up but for any word all I get is "information not available". Spelling\Grammar and Translate appear to work OK.
Nor will Media Player behave (it won't play audio CDs, for example.)
I don't even know whether this might be a Windows 7 problem or something else. I keep my virus protection strictly up to date.
Any advice , short of a whole new reinstall, gratefully received.