I've scanned it with 360 Total Security, Malwarebytes Anti-Malware, AdwCleaner, CCleaner, and a few others but I'm not getting any threats detected. I've tried some system scans (like SFC) but the process will get so far and just hang - this also happened with Spybot S&D.
I'm regularly having to reboot the laptop to download or run what I need before the system grinds to a crawl. Task Manager confirms that some process is hogging the disk at 100%, but it's not obvious what it is as it cycles through a number of processes when I order it by the disk column.
I sometimes get the error message: "Microsoft Windows. The application is not responding. The programme may respond again if you wait. Options: END PROCESS or CANCEL." On one occasion when I selected end process it actually stopped the mystery process but it returned as soon as I rebooted.
Note that I have also restarted in Safe Mode (with networking) but it was still as slow.
Looking for any help or suggestions. Thanks in advance.
Edited by batdog, 10 September 2016 - 10:26 AM.