My error...just another of today's battles with senility
...the link I should have left, Slow Computer-browser Check Here First; It May Not Be Malware - http://www.bleepingcomputer.com/forums/topic87058.html
Keyboard failure errors...seem self-explanatory to me, but these may also be caused by unusual circumstances (failing CMOS battery comes to mind).
This system appears to be a desktop, so I would replace the CMOS battery even if it is not related to your problems.
Your problem re the Recovery Console...is definitely linked to your use of ComboFix, since you installed the RC via CF. I can't address anything about ComboFix, which is why I gave you the link re info concerning such.
Google Earth...quick answer is to uninstall it, reinstall it.
Of course...if all your problems are due to malware and you've deferred addressing such in the forum for five weeks...posting these issues in the XP forum isn't going to shorten the time you evade address of such.
<<I have no idea whether these symptoms are being caused by an old failing computer part or a virus.>>
I've never figured out...why people always assume that there is only one item...which needs address in their situations. You could have malware, software, and Windows problems, along with hardware issues. It's hard to tell at this point, IMO.
Anyway...you could have multiple issues.
Let's go back 5 weeks...what made you think that running ComboFix would help, not hurt? What provoked that?