HPWNSCSI.DLL for Bus Logic PCI FAST SCSI Host Replacement file HPWNSCSI.DLL for Bus Logic PCI FAST SCSI Host Adapter card BT-946-C. This file corrects a situation when HP DeskScan II version 2.1 or 2.1a, or HP PicturePlace version 1.00 launches and hangs the computer. Replace the HPWNSCSI.DLL file located in the same directory where the scanning software was installed (i.e., DESKSCAN or SCANJET). Then run the Bus Logic Autoscan Configure Utility. Select SCSI Device Info and the program will "scan for SCSI devices" and should find the scanner. It should then update its configuration files and the HP scanning software should launch properly.