[sputnikk]

Win 7 отсутствует в списке поддерживаемых хостов в VB 6.1:

1.4 Supported Host Operating Systems
Currently, Oracle VM VirtualBox runs on the following host OSes:
 Windows hosts (64-bit):
– Windows 8.1
– Windows 10 RTM (1507 / 2015 LTSB) build 10240
– Windows 10 Anniversary Update (1607 / 2016 LTSB) build 14393
– Windows 10 Fall Creators Update (1709) build 16299
– Windows 10 April 2018 Update (1803) build 17134
– Windows 10 October 2018 Update (1809 / 2019 LTSC) build 17763
– Windows 10 May 2019 Update (19H1 / 1903) build 18362
– Windows 10 November 2019 Update (19H2 / 1909) build 18363
– Windows Server 2012
– Windows Server 2012 R2
– Windows Server 2016
– Windows Server 2019