I've now the same problem with 2 Samsung 840 SSD's, Gigabyte Z87MX-D3H, Win 7 x64 and Intel RST 188.8.131.526.
Did you find a solution?
Best regards, Thomas
I recommend you doing a low lever format to the SSD in order to clean it completely and start from scratch again installing the operating system.
When the IRST finds errors or bad data on the system will start rebuilding the array, verifying and repairing it. You can check more information at the link on page 34: