Hi guys, I've a Samsung Laptop (i3, 4gbram).. yesterday I updated the bios to latest one. While its being updated, there was a bluetooth driver is being installed.. Once bios update completed it shutdown the computer. so other driver installation was not completed.. so I can not load windows 7 anymore. Firstly I got a startup error and I Fixed it by using command prompt. And then the following error accourd: msachi.sys is missing or corrupted, so I used Windows command prompt via DVD and copied this file from the dvd to system driver folder.. and now I'm getting a blue screen: 0x0000007b 0xfffff880009a9928 I've tried to disable achi mode in bios (selected IDE and Auto) but doesn't help. I've fixed mbr, bcd etc.. not helped. wtf is that blue screen error? I'm sure that my hardware is ok. that is software problem but I dont wanna re-install or format, there are so many programs, documents etc.. Please Help me !!!! I think this problem because: achi driver.. is there a way to disable this in registry via command prompt? cuz I can't open the windows in safe mode.. I've also tried to restore windows but it doesnt work.. PS: computer is works perfect with Ubuntu 10.04 Live CD.