along  with  kemical's  informative  reply:
did  you  go  through  file-explorer  to  exact  location  of  each  file  and  try  opening,  XynWill?  if  you  remember  the  exact  name  of  file … you  may  wish  to  search  for  it.
when's  the  last  time  you  rebooted?  i  surmise  the  three  text  files  automatically  open  on  desktop (upon reboot)?  or  do  you  manually  open  each  file  upon  boot-up?  do  you  have  alternate  user-names … if  so,  log-off  and  then  log-on  again.
how  old  is  your  drive/ram?  did  windows  perform  any  updates?  if  all  else  fails,  have  you  tried  windows  system-restore  back  to  previous  point?  keep  in  mind … any  newly  added  text  after  that...