Why 34405A can't be detected in Windows 7?
There are two posibilities causing 34405A couldn't be detected.
1. IO Libraries Suit 15.1 or below which does not supported in Windows 7 operating system.
2. Older 34405A Firmware Revision 1.39-3.08 or below is installed in the DMM. Follow the steps below to get 34405A detected at Windows 7.
Troubleshooting Tips - 34405A can't be detected at Windows 7