![virtualbox portable windows 7 64 bits virtualbox portable windows 7 64 bits](https://www.gratissoftwaresite.nl/downloads/files/images/virtualbox6.png)
Uninstalling " VirtualBox USB" from the device manager does not help either. Uninstalling and reinstalling VBox did not help (either with 3.0.6 or 3.0.8 I tried it repeatedly). Remember: I´m from Germany an I have a German edition of Windows so the messagetext is my translation the exact message may differ on nongerman editions of Windows, but the meaning is translated correctly. The host displays a message saying that the driversoftware was not installed, added by " VirtualBox USB Device unplugged". After installing VBox and starting the VM, the host tries to install " VirtualBox USB" driver but is not succesfull. While the VM still starts and runs normally, all USB support for the VM is gone. a Philips Speechmike Pro, LFH 6274) after upgrading from Vista to Win 7 I tried upgrading VBox to 3.0.8.
![virtualbox portable windows 7 64 bits virtualbox portable windows 7 64 bits](https://images.sftcdn.net/images/t_app-logo-xl,f_auto/p/20cb638a-96d4-11e6-ae34-00163ed833e7/4056632050/virtualbox-portable-logo.png)
When I experienced some bad performance of USB-Gear in the guest (i.e. The VM was starting normal and there were no warnings, etc. At first (then still with VBox 3.0.6, which I had been running under Vista 64 Bit, due to frequent bluescreens in the guest with VBox 3.0.8) everything seemed ok after upgrading the host to Win 7. I´m using a guest with Win 7 RC 32 bit (no 64 Bit RC available). Hardware is a Core 2 Quad Intel CPU (Q8300) with 2,53 GHz and 8 GB RAM. Just upgraded from Vista Ultimate 64 bit (German edition too) where all was ok. In order to try doing it personally, you need just to download Oracle VM VirtualBox for Windows 7, install it onto your hard drive and get on with tuning some of the tweaks and tricks of this software combine, - the impression will be definitely positive.I was running VirtualBox 3.0.8 (same problem with 3.0.6 and now with 3.0.10) on a Windows 7 Ultimate 64 bit host ( German edition, though the forum-posts show the same problem for users of English editions too). It’s really easy to configure and customize all the virtual machine options.
![virtualbox portable windows 7 64 bits virtualbox portable windows 7 64 bits](https://i.ytimg.com/vi/yZw_8Y-v298/maxresdefault.jpg)
But this time I would like to make a pause and describe, how to download and use Oracle VirtualBox for Windows 7 for free. On the software market there is a plenty of applications, eligible to run the external platforms: VMWare, Virtual PC and others. By using the virtual emulator, you can install literally any system on your Windows-based computer: Linux, Unix, FreeBSD, Android, Mac OS X, even not mentioning all the systems from Windows generation: from ancient Win 95 and 98 builds to the latest Win 8.1 and Win 10 releases (both 32- or 64-bit). Regardless how incredible is the idea to run any operational system on your PC, it is still true.