Published on 07 Aug 2014 | over 2 years ago
BACK UP YOUR BLUESTACKS FOLDER BEFORE DOING THIS.
Go to C:\ProgramData\BlueStacks\Android ,delete the newer initrd.img and prebundled.fs files.Note C:\ProgramData folder is usually hidden
Rename to remove the .BAK extension on both similar older files.
Exit Bluestacks completely before renaming.
another solution is a clean uninstall but will erase ur old settings - uninstall it , then manually delete the bluestacks folder in C:programfiles and C:programdata, delete bluestacks entries in the registry :open regedit and delete HKEY_LOCAL_MACHINE SOFTWARE-Bluestacks-Android and install again
Approach a new method if this one doesnt work. Maybe you can copy or rar the bluestacks folder , uninstall reinstall bluestacks. Then delete the new bluestakcs folder unrar the old one but copy those two files mentioned in description in the unrared old bluestacks folder and replace.OR you could just install BS in another pc and bring those two files and replace in old one.