It takes only a little reading on this forum to discover hacked editions are not supported. Given your first comment is you're using a hacked version is not going to get you help fixing it.
If your laptop's screen turns black, unplug the power to the pc then remove the battery. Hold the start button on your laptop for 20-30 seconds then continue with setting up the battery again and power lead then press star. This should be able to fix your problem. Reasons to get black screen The booting software may be corrupted The monitor is turned OFF or the cables are disconnected A component in the computer (such as a graphics card) may have overheated. If you have just installed the computer and nothing seems to work, it could a bad monitor or a low power supply. Recent Hardware Changes. Corrupt drivers for any recently installed hardware can crash the system Bad video/graphics card BIOS - the Binary Operating System may be corrupted BIOS Corrupted Operating System. Motherboard Problems. Hard Disk Crash. This is one of the major reasons for black screens
Some good info here, but it does not have anything to do with the OP's problem. Read the first post again and the rest of the answers given to fix it.
You mean WATFix? Also the "SFC /scannow" command can be used. @OP: Would you post an MGADiag report? It will give detailed info about tampered files.