I'm not sure I'm in the right forum. Maybe this belongs in Performance & Maintenance or possibly Microsoft Security Essentials.
I am having trouble with Windows Explorer acting "lazy" for lack of a better way to describe my issue. I cannot for certain blame this issue on MSE, but the Windows Explorer problem to be described does seem to coincide with the installation and configuration of MSE. Maybe I am wrong? But this issue has been sporadic since mid-Nov, when I first installed MSE, and has progressively gotten worse in the past couple of weeks.
What happens is basically that Windows Explorer goes to sleep or otherwise locks up my PC. This most often happens after the PC has been idle for some time, perhaps 2 hours or longer (or thereabouts). Ultimately, all I can do is do a hard reboot of the PC.
I can no longer do a system Backup to my NAS drive as the PC becomes unresponsive several hours into the Backup. I can do a Backup to a second HD, but that's because the BU will proceed before Windows Explorer 'goes to sleep'.
Windows Explorer will go 'unresponsive' even though I do not have any applications open. When I try to open the Task Manager, I just get the 'busy' circle and it won't open.
My system is Windows 7 Home Premium (64-bit), with 8 GB RAM. The PC is a Dell E520. I have an Nvidia GeForce 9500 GT graphics card.
When this first started happening (again after MSE installation, coincidence or not?), I only had 4 GB RAM. I upgraded to 8 GB (DDR2-800 MHz) thinking maybe that was the issue. But in Task Mgr, I seldom use much over 2 GB of RAM.
Things that I've already tried are:
(1) Clean Boot (several times)
(2) Disk Clean (~ once per week)
(3) Defrag disk (once per week on schedule)
(4) Remove unnecessary applications
I am sure that my old Trend Micro antivurs/malware has been removed. MSE does seem to be working fine. But I can't help but think that there is some 'behind the scenes' system service that is conflicting with MSE.
Also, I've checked the system error log to the best of my ability and there are numerous "System or Application Hang-ups" reported. But I am not savvy enough to ferret out and interpret the logs.
Is there a way to "repair" Windows Explorer without having to do a complete reinstall? Any Windows Update that may have caused this issue?
Thank you for your support.