Just purchased a SSD Pro 2500 240Gb on Woot! My Lenovo e220s does not see the drive. responds as if no drive is installed. BIOS won't see it. It works fine on another computer. I confirmed the drive firmware version is up to date. I am certain that it is installed correctly. Old drive works fine.
We understand your situation regarding the Intel® SSD Pro 2500 Series.
Please make sure that the controller mode in your BIOS is set to AHCI and then reboot. However, since the drive is working in another system it may be an issue with your laptop.