Hi all,
Finally got rid of the problem after about 6 months of trying. Reading most of the responses I got rid of:
- HP Smart some time ago (but still got the problem but think it was part of the problem)
- HP Print Scan Doctor today and solved the problem.
I'm still on Windows 10. HP Print Scan Doctor doesn't appear under the "Apps and Features/Remove Program" list in System settings. I had to search for it.
I found it under C:\Program Files\HPPrintScanDoctor.
Rather than delete the folder altogether I renamed the following executable files as follows:
HPPrinterHealthMonitor.exe to TEMP HPPrinterHealthMonitor.exe
HPPrintScanDoctorDeploymentMgr.exe to TEMP HPPrintScanDoctorDeploymentMgr.exe
HPPrintScanDoctorService.exe to TEMP HPPrintScanDoctorService.exe
HPSUPD-Win32Exe.exe to TEMP HPSUPD-Win32Exe.exe
That's certainly done the trick for me. Hope it's some use to everybody else.