I recently upgraded my computer and did a clean install of Windows 7 Pro 64-bit. I have since been getting the above error often. Once this error occurs, most icons become plain white pages; opening Computer does not show drives; opening Control Panel does not show anything; and attempting to open the Properties dialog of a drive doesn't do anything at all. All of these symptoms go away (until the next instance of this error) if I open Task Manager and End Process on DllHost.exe.
Until a few days ago, another symptom was that Context Menus would not appear. This symptom seems to have been resolved by running shexview-x64 and removing Context Menu items that I don't use or just don't care about.
One other symptom that I believe is related (but I cannot verify this) is that it seems to be causing problems with temperature and/or fan sensors. I say this because occasionally, I will get a message that my CPU fan is at 0 RPM, but I can see it spinning normally. Further investigation shows a MB temp of approximately 80 degrees F and a CPU temp of approximately 75 degrees F. Since that is roughly room temperature and my computer is busy converting video files at the time, I doubt the CPU is at 75. This 0 RPM popup ONLY happens when there is a problem with DllHost.exe.
ASUS P9X79 Pro MB
Intel Core i7-3930K CPU
Phanteks Dual Heat Pipe/Dual Fan CPU Cooler
64 GB GSkill F3-1866C9D-16GXM RAM
EVGA GeForce GTX 680 GPU with 4GB GDDR5 RAM
480 GB OCZ SSD
Adaptec 6405e RAID Controller
2x1 TB Western Digital Black HDs in a RAID0 configuration
2x2 TB Western Digital Green HDs in a RAID0 configuration
3 TB Seagate Barracuda HD for backup images
As stated earlier, this was a clean install.
All Windows Updates have been installed. All drivers were downloaded (NOT installed from the shipped CD/DVDs) and are all up-to-date. One exception to this is that the Realtek High Definition Audio Device has been uninstalled due to a problem with that driver, but the Windows 7 driver works just fine for me.
I have run SFC a half dozen times and all system files report as clean. I have run CHKDSK on all drives and they are all clean. I have run SuperAntiSpyware, Malwarebytes and ESET Online Scanner -- all clean.
Bottom line is that I'm stumped. Can anyone give me help on how to track this thing down? I would greatly appreciate it.
Edited by hamluis, 11 March 2013 - 08:45 AM.
Mistake - Hamluis.