DLL-Files Support says:
Possible manual solution for you 'handyman-fixers' out there: (at your own risk)
apcrtldr.dll seems to belong to the "Bandoo DataManager" (Datamngr).
Bandoo Datamngr is yet another name for the Bandoo browser plugin that is created by Bandoo Media Inc. It may be related to a number of potentially unwanted applications and browser extensions such as Searchqu Toolbar, Video toolbar, or Music toolbar. If you get an error message for the apcrtldr.dll being missing, the cause is probably a left over Startup Entry from the toolbar, pointing to the file that has been removed by your Security Programs.
How to remove the Startup entry:
Win XP, VISTA, 7: Press "Windows"-key + "R" to bring up the "Run" dialogue. In "Run" dialogue type "msconfig" and hit Enter Under the tab "Startup", uncheck any boxes relating to these files.
Win 8/10: Press CTRL+SHIFT+ESC at the same time to bring up the Task Manager. Under the tab "Start-up", uncheck any boxes relating to these files.
Should you not find any mention of the missing file here, try instead Microsoft Sysinternals Autoruns, available for free at Microsoft Technet