Thanks for answering anskyber, I haven't installed any Toshiba related apps and services and processes in task manager don't show any Toshiba related power configuration processes running.

I know that laptop manufacturers install such apps in order to manage power more efficiently but the Win 7 installation was clean and as far as I'm aware there were no Toshiba power related updates on the Windows update page after the installation, only graphics drivers sound drivers and a driver for the Texas Instruments card reader. There are only perhaps 15 or so processes running, none Toshiba, and no Toshiba related services either.

Thanks for the advice Crossbow7 but to be honest that's the first place I looked lol, I should have mentioned that in my original post. It's strange but there aren't a lot of postings on the Satellite P100 Toshiba forum regarding Windows 7, either not a lot of people have it installed or there are very little problems using it.

I can't see it being the former as it's so easy to install, you don't even have to partition the hard drive if you use the virtual hard drive option.

I checked the iyogi.net site you linked to and Web Of Trust gives a warning for it, it doesn't appear to be trustworthy or reliable although the address checker on my virus suite clears it for malicious content, just thought I'd mention it.