So we have some HP Scanjet 5590 that some people use to scan small documents in from their desk. Anyway we needed to update some of these user’s PCs to Windows 7. That was fine because HP had the Windows 7 software on their website. Anyway after updating the PCs to Windows 7 users started complaining that it would take a very long time to scan a single page. So I sat down and went to scan a page. I found that the “HPISCNAPP.EXE” process was using 50% (1 CPU) of the users processor. I found this issue with both Windows 7 Pro 64-bit and 32-bit.

We contacted HP about the issue and they indicated that since we’ve had our scanners for longer than 1 year (The warranty period on them), that they wouldn’t even speak to us unless we paid $100. I think we should all commend HP on supporting your customers when the problem is your own software. So I did some digging around and found that they still had the Windows Vista version up on HP’s site. I downloaded this version, set compatibility to “Windows Vista SP2″ and then ran it as the administrator. The program installed and has worked fine ever since.