Dell Latitude E6430 Keyboard stops responding

[win7dch]

I have several Dell Latitude E6430 PCs that I use external wired USB keyboards with. After a while (~ one hour?) the keyboard stops responding. If I wait long enough (15 minutes?) I can start typing again. It seems that the notebook keyboard also stops responding. I am using external monitors via e-port replicators. There have been times when I am able to type ONLY in a certain field. For example a form in an IE window that is running in compatibility mode. I do not have an issue within VMware Workstation 11.

I have restored to factory image, reloaded software and still have the problem. I have updated BIOS and drivers. I have removed USB controllers using Device Manager and restarted. Still have issues.

Systems are using Windows 7 Pro.

Curious if other software might be causing issues. Some installed programs include MS Office 2013, Notepad++, Paint.net, BeyondCompare, VMware Workstation 11, FileZilla, Greenshot, Google Drive, Chrome, Tracker PDF Viewer, GoToMeeting, Kaspersky Internet Security.....

 

[UsernameIssues]

As a test, uninstall Kaspersky Internet Security.
Replace it with MSE:
Microsoft Security Essentials - Microsoft Windows

If that fails to solve the issue, leave MSE installed while we work on the issue.

Try these steps:
http://www.sevenforums.com/tutorial...ation-conflicts-performing-clean-startup.html

 

[win7dch]

I found a info regarding display drivers conflicting with USB drivers. I found that the display drivers were in fact old and have updated them directly from Dell and Nvidia rather via MS and Windows Updates.

I am curious if this will resolve the keyboard issue. If it does not I will consider your suggestion next.

Thanks!

 

[win7dch]

Still having trouble after I updated Display drivers, both Nvidia and Intel.

I have configured Greenshot to NOT start at startup as I had read about a memory leak. I have also just set Kaspersky to conceed resources to other applications.

Something odd happened yesterday. The keyboard was working fine until I tried using VM workstation. There was no keyboard response. The keyboard still worked fine outside of the VM.

Keyboard responds fine after a restart. I have also tried 2 different USB keyboards with the same issues.