Thank you very much for help. i am so grateful to you that you are helping me.
Today i tried long times to solve the problem. I was put my SSD 3 hard drive at SATA 2.0 port install windows 7 and everything is updated now. and i was put my SSD 3 at SATA 3 PORT. but still same problem windows 7 can't boot from SSD when i insert this at SATA 3 port.
I can't update hdd/ssd firmware.
Can u learn me how do i update sandisk extreme 120 gb ssd3 6gbs FIRMWARE in my computer so that i can use it as a primary OS hard drive ?
Again Thank you very much for your help. you are so kind to me.
Best wishes and happy Christmas