Solution
Download and run the batch file attached in the Attachment section as administrator (in order to prevent error 10013).
If this did not improve the boot time, do the following steps:
- Open the Windows execution window by pressing Windows+R and run services.msc. The Windows Service Manager opens.
- All the services that depend on NSIS (Network Store Interface Service) must not be set to Automatic. Otherwise NSIS will run during the boot process and the boot time will be long again. Right-click on the Service, open Properties and choose Manual as Startup Type for every NSIS service. The NSIS services are: DHCP Client, DNS Client, IP Helper, Network Connections, Network Local Awareness, Workstation and NSIS.