Geez you are one high maintenance friend...
I was thinking the same as Frostbite but Keef has a very valid point. I seem to think I've a lappy upstairs somewhere which suffered similar symptoms which I couldnt cure.
CMOS battery maybe?
Another thing to try is to disconnect from the mains, remove the main battery, leave it out for an hour, put it all back and try again.
Give me a ring tomorrow if you're still stuck.