The files belong to Panda(PAV.SIG,. IMscan.DLL) are false alarms(delete it)
, for the winstart001 take a look here: http://www.avast.com/forum/index.php?board=4;action=display;threadid=698;start=0

For the files which are located here: C:\System Volume Information
look here: http://vil.nai.com/vil/SystemHelpDocs/DisableSysRestore.htm

Doing this and than ask the Questions which are left over.:slight_smile:

Edit: If you want to know more about the Panda files, make a boardsearch or Panda