solved by updating to latest Intel® Rapid Storage Technology driver.
I'm having the exact same problem with my T400. Can you post the link of the driver that you installed?
Try this, but be sure to select your correct o/s version:
Intel® Rapid Storage Technology
Worked!! I think the key is also to de-install the Turbo Memory Controller driver which the new Rapid Storage driver does. Turbo memory is not required for SSD's.