If the Bandicam program was installed in the system, then install a new version of Bandicam without uninstall the old version, which old version is enabled the "auto start program when pc start", then the new version of Bandicam program would be not auto start after every reboot the system, although the option "auto start program when pc start" is enabled.
The solution is untick and tick again the option "auto start program when pc start", then it will fix this problem.