1. If you are unable to download free Macrium, try to download the Macrium WinPE .iso from my Skydrive. Burn this .iso to CD (e.g. with ImgBurn). Boot the PC with that CD which allows you to make images and recover from images - just the same as if it was an installed Macrium.
2. Are you sure that there is no recovery partition on your Sony. With that you could reinstall the Win7 Basic. If not, get a hold of any Win7 Basic installation disc (e.g. from a friend) and install with that. You then activate it with the key that is on the COA sticker on the bottom of the PC.
3. In case you find the recovery partition on your system, this is the reinstallation procedure:
Turn off your computer.
Restart your computer.
When the VAIO logo appears on the computer's screen, briefly press the F10 key on the computer keyboard.
The VAIO Recovery Wizard appears.
4. Click Next.
5. Select one of the available menu options.