Merm

Hello. I did switch from 675 to 880. I got alienware m17 r4 did all steps as listed. After inserting 880 in device manager the device number was 1198 and pc model 0551. But i couldnt install drivers. I noticad that i didnt: Unplug power cord - Remove battery - Hold power button for 30 seconds - Remove CMOS coin battery (next to GPU fan) - Remove gtx 770m -> 2 screws only, there's no need to remove the heat sink. - Reinsert CMOS battery - Plug power cord - Power on -> Beeps -> hold power button until shutdown. - Power on -> F2 -> disable the integrated graphics - Second Advanced Menu -> Video Configuration -> disable IGP -> set display to PEG -> Exit menu 'Save Without Exit' -> shutdown. - Reinsert gtx 770m. - Power ON -> F2 -> shutdown. - Reinsert Battery. So i did it .After turning computer on in device manager nr of my pc changed from 0551 to 0580. I tried to install drivers. It did start but aftert short it stops saying that installation was unsuccessful. I did try again to remove battery, hold power buton etc.. but in the end when i turn it on id does beep. And its tur off imidietly not like earlier when i had to keep pressing power button to turn it off. So i did remove batteries, hold power for 30 sec. Computer starts but thers no graphic adapter in device manager with both 880 or 675 installed. Is there any hope for my comuter ?