A collegue’s desktop computer has twice lost touch with its DVD drive. The drive is OK, it’s recognized by the BIOS, it even booted from a FreeBSD DVD when told to do so. Yet Windows 7 refused to display the drive. The Device Manager utility complained about a missing driver service and something about a […]

Read More → CD/DVD drives in Windows 7 and code 39 error

Have you just installed PTC’s Mathcad 14 on 64-bit Microsoft Windows 7 Professional only to receive the strange and not so informative error message “Unable to create 12.0 engine factory” when trying to run the software?

Read More → Error message when attempting to run PTC’s Mathcad 14 on 64-bit Microsoft Windows 7 Professional