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Help with Nokia Lumia 635 RM-974 - Urgent!
I have a Nokia Lumia 635 (model RM-974). Unfortunately, it won't boot up correctly. Every time I try to turn it on, the Nokia logo appears, followed by a BSOD. When I connect it to my PC, it cons...
With the phone powered off, press and hold the Volume Down button, then press and hold the Power button. When the phone vibrates, release the Power button but keep holding Volume Down until you see an exclamation mark (!).