Are you able to boot into safe mode? By pressing the F8
key right when Windows starts, usually right after you hear your computer
beep when you reboot it (some versions of windows will display 'Starting Windows' with a grey progress bar)
you will be brought to a menu where you can choose to boot into safe mode. Click "with networking support" to be able to use the internet. If that works, please read the selfhelp instructions which can be found here
. Please use those instructions as a guide to removing AlfaCleaner from your computer. If you are not happy doing it by yourself and would like 1 to 1 help, or cannot remove the program using the self-help guide please reply and we can consider the options possible.