Windows 7: Temporary profile problem

I have a peculiar problem that I hope you can help with. After coming home from an 18 day holiday, I switched my computer on, after an inordinately long time when the screen was displaying "Preparing your Desktop" I was given a screen that had very few icons on and a legend that stated that I had been given a temporary profile and and any alterations I made would be cancelled on closure. Restart would not help. However (and here is the odd part) if I close down the computer and then switch off at the mains, leaving it off for a minimum of 1/2 an hour (any less doesn't work) the computer will boot up as normal??? Any future restarts or software on/off will result in temporary profile again.
Whilst I can live with this, it doesn't seem right.
Regards, Philip Church
Running: Windows 7 premium (sp1)
On an HP P6-2065 with Intel d/core 17-2600 and 4g of ram

Hello Philip, and welcome to Seven Forums.

The tutorial below may be able to help with this error. Be sure to read all of it for all available options to try.

User Profile Error - Logged on with a Temporary Profile - Vista Forums

Hope this helps,
Shawn