I can't start in my Virtual Box 4.3.30 r101610 my virtual machine Windows 7
I use Fedora 21 WorkStation
kernel-4.2.0-0.rc3.git4.1.vanilla.mainline.knurd.2.fc21.x86_64
I add an attachment
VBox.log.zip
with complete log
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VirtualBox VM 4.3.30 r101610 linux.amd64 (Jul 10 2015 13:38:33) release log
00:00:00.176692 Log opened 2015-07-27T13:06:44.730979000Z
00:00:00.176693 Build Type: release
00:00:00.176695 OS Product: Linux
00:00:00.176696 OS Release: 4.2.0-0.rc3.git4.1.vanilla.mainline.knurd.2.fc21.x86_64
00:00:00.176696 OS Version: #1 SMP Sat Jul 25 07:21:07 UTC 2015
00:00:00.176715 DMI Product Name: HP ProDesk 400 G1 MT
00:00:00.176720 DMI Product Version:
00:00:00.176774 Host RAM: 7912MB total, 5971MB available
00:00:00.176777 Executable: /usr/lib/virtualbox/VirtualBox
00:00:00.176777 Process ID: 8615
00:00:00.176777 Package type: LINUX_64BITS_FEDORA_18
00:00:00.244492 Installed Extension Packs:
00:00:00.244508 Oracle VM VirtualBox Extension Pack (Version: 4.3.30 r101610; VRDE Module: VBoxVRDP)
00:00:00.247556 UIMediumEnumerator: Medium-enumeration finished!
00:00:00.247631 Using XKB for keycode to scan code conversion
00:00:00.248104 SUP: Loaded VMMR0.r0 (/usr/lib/virtualbox/VMMR0.r0) at 0xffffffffa07f1020 - ModuleInit at ffffffffa080f560 and ModuleTerm at ffffffffa080f7f0
00:00:00.248115 SUP: VMMR0EntryEx located at ffffffffa0810ba0, VMMR0EntryFast at ffffffffa08107e0 and VMMR0EntryInt at ffffffffa08107d0
00:00:00.248889 Guest OS type: 'Windows7'
00:00:00.250736 fHMForced=true - Lots of RAM
00:00:00.250747 fHMForced=true - SMP
00:00:00.255388 File system of '/home/abravo/Documentos/Windows 7/Snapshots' (snapshots) is ext4
00:00:00.255402 File system of '/home/abravo/Documentos/Windows 7/Arranque.vdi' is ext4
00:00:00.261115 Shared clipboard mode: Bidirectional
00:00:00.261571 Drag'n'drop mode: Bidirectional
00:00:03.195789 ********************* End of statistics **********************
00:00:03.195848 VUSB: detached 'HidMouse' from port 1
00:00:03.215590 AIOMgr: Flush failed with VERR_INVALID_PARAMETER, disabling async flushes
00:00:03.243251 Changing the VM state from 'DESTROYING' to 'TERMINATED'.
00:00:03.878376 UIMachineView::storeGuestSizeHint: Storing guest size-hint for screen 0 as 720x400