virtualbox.org

When i try to install windows xp on vb it crash with error: REGDB_E_CLASSNOTREG (0x80040154)

virtualbox version 5.0.10 r104061
OS: windows 7 x86 ultimate sp1

what i have done:
delete/install again vb(inclusive an older version 4.3)

VBoxSVC.exe /ReRegServer
regsvr32.exe VBoxC.dll

set VBoxSVC.exe to run as administrator

Please help me!

There is an bugtracker entry. Try to follow some of the given fixes:
https://www.virtualbox.org/ticket/14296

If nothing works please provide information to the development team. They have to become aware that this issue affects a lot of people.