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"Bad shim signature" error when starting Windows

October 4, 2026 · claude Secure boot Windows 11 Windows +1

Windows 11 was no longer booting after I enabled Secure Boot. I was getting the following error message:

VirtualBox does not run or runs slowly under Windows 8

February 3, 2013 · claude Windows Windows 8 Virtual Box

Windows 8 comes with Hyper-V pre-installed. If you want to run Virtual Box, you must completely uninstall Hyper-V through the "Add and Remove Programs" option from the Control Panel. Failing doing so will result in:

Installing the Android Development Environment for Windows 7

April 14, 2012 · claude Windows Android

This post lists the main steps in order to install an Android development environment for Windows 7. The developement environment relies on Eclipse.

How to backup and restore Windows 7 activation files

January 27, 2012 · claude Windows

It is possible to backup and restore the activation status of Windows 7

How to change the signature of a disk

November 14, 2011 · claude Windows

To change the signature of a disk under Windows 7, follow these steps are:

"Bad shim signature" error when starting Windows

VirtualBox does not run or runs slowly under Windows 8

Installing the Android Development Environment for Windows 7

How to backup and restore Windows 7 activation files

How to change the signature of a disk

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