Fixing problems with the context menu is just one of several tasks ShellExView can be used to perform. It is useful before proceeding to have an idea as to which application is causing the problem with the menu. If the lock-up or system hang has only started recently then in most cases installation of a particular piece of software at around the same time will be at fault.
After launching ShellExView, click the Type column to sort the items into groups, and then browse through the list of applications and objects until you find the Context Menu items grouped together.
The offending software item will be found here – select the item and press the F7 key to disable it. Exit ShellExView and try to recreate the situation (a right-click on a document icon for instance) in which the system hang was previously occurring – you should find that this has been resolved. If not, disable further context menu items until the offending software object is identified, before re-enabling (F8) the others.
Remember that whichever software utility or application is causing the context menu to slow down, it will remain fully installed on your PC after you disable its context menu elements in ShellExView, allowing you to continue using the application in question.