Thanks mate, I have although changed my entire OS but if I will get that problem once again I would try your way if I got success then I would integrate this driver in my boot.wim. And as far as trimming is concerned you would be surprised to know that I have trimmed by OS with Vlite, I know most of the members are getting problem in trimming Windows 7 SP1 with vlite, but I didn't get any problem what so ever with vlite. I am saying so as I did install my OS after trimming and it was fine till then, I got this problem after I have started customizing my OS.