2nd stage setup: Mouse doesn't work

Tested in rev. 35552. With and without KQemu.
I get to 2nd stage then mouse doesn't work.

(base/services/umpnpmgr/umpnpmgr.c:2196) Unknown event
(base/services/umpnpmgr/umpnpmgr.c:2196) Unknown event
(base/services/umpnpmgr/umpnpmgr.c:2196) Unknown event
err:(dll/win32/setupapi/queue.c:1552) copy error 2 L"C:\\ReactOS\\inf
i8042prt.sys" -> L"C:\\ReactOS\\System32\\drivers
i8042prt.sys"
err:(dll/win32/setupapi/queue.c:1552) copy error 2 L"C:\\ReactOS\\inf
kbdclass.sys" -> L"C:\\ReactOS\\System32\\drivers
kbdclass.sys"
(base/services/umpnpmgr/umpnpmgr.c:2196) Unknown event
err:(dll/win32/setupapi/queue.c:1552) copy error 2 L"C:\\ReactOS\\inf
serial.sys" -> L"C:\\ReactOS\\System32\\drivers
serial.sys"
err:(dll/win32/setupapi/queue.c:1552) copy error 2 L"C:\\ReactOS\\inf
serenum.sys" -> L"C:\\ReactOS\\System32\\drivers
serenum.sys"
err:(dll/win32/setupapi/queue.c:1552) copy error 2 L"C:\\ReactOS\\inf
i8042prt.sys" -> L"C:\\ReactOS\\System32\\drivers
i8042prt.sys"
err:(dll/win32/setupapi/queue.c:1552) copy error 2 L"C:\\ReactOS\\inf
mouclass.sys" -> L"C:\\ReactOS\\System32\\drivers
mouclass.sys"
err:(dll/win32/setupapi/queue.c:1552) copy error 2 L"C:\\ReactOS\\inf
isapnp.sys" -> L"C:\\ReactOS\\System32\\drivers
isapnp.sys"
err:(dll/win32/setupapi/queue.c:1552) copy error 2 L"C:\\ReactOS\\inf
pciide.sys" -> L"C:\\ReactOS\\System32\\drivers
pciide.sys"
err:(dll/win32/setupapi/queue.c:1552) copy error 2 L"C:\\ReactOS\\inf
pciidex.sys" -> L"C:\\ReactOS\\System32\\drivers
pciidex.sys"
(base/services/umpnpmgr/umpnpmgr.c:2196) Unknown event