AVAST    FULL   UNINSTALLATION

Note:-this process only for that in which avast uninstaller (clear) created two or more operating system(os)..

step1:-first press the key where window symbol is  there..


secondly press key R on keyboard
BOTH key  have to press at
same time ..


sstep 2:-there is window of run is opened up...on this type msconfig from
keyboard..and press ok..




step 3:-there is window pop up 

step 4:-select boot option





step 5:-Now select the OS 
which is generated by avast uninstaller ...select
 and delete it..