How to fix the blue screen of death (part 1)

Everyone have a big problem with the blue screen of death.let's say you have been working for hours on you're blog or somthing others and it's very important.Suddenly the blue screen of death came.Some poeple have restart there computer and the BSOD never came again but other poeple are scrambling in this trouble.So in this tutorial i will be showing you how to fix it.with two defferent software can fix you registry error,computer problem and in the same time speed up you're pc.
 So i make 2 parts,Now the first software and in the second part the second software
1-the software cold "registry easy" download it and install it 
2-click scan now to scan you're computer
3-After the scan finish click "fix all" and it will ask you for the registry key
NOTE:
1-the key is :474e-da87-2c0a-9d9c
2-dont forget the second part or it will not work