There can be a problem upgrading older computers to Windows 7, especially if they came from XP, or had anything from Trend Micro installed. If theres a file call c:windowssystem32drivers mcomm.sys, this file needs to be deleted first, otherwise the Windows 7 Upgrade installation just gives a BSOD (Blue Screen of Death) and some info about that file. If you Google it, they say that the file is a Hangover from a TrendMicro spyware program.
The problem comes in that the Windows installation is incomplete, you cannot boot up, and the installation just goes in a loop forever. You have to remove your drive and access it from another computer in order to delete that file.
Alternately, one could boot the PC with some sort of OS Live CD (CDROM must be first boot sequence) and run the PC under, say, Ubuntu then go into the hard drive from that OS and delete the WindowsSystem32drivers ccmomm.sys file, then reboot from HDD back into the continuation of the Windows 7 installation.
The process TrendMicro Common Module belongs to the software ActiveClean or Trend Micro Internet Security or AEGIS by Trend Micro Inc (http://www.trendmicro.com).
tmcomm.sys is located in the folder C:WindowsSystem32drivers. Known file sizes on Windows XP are 76,560 bytes (66% of all occurrence), 102,664 bytes, 138,384 bytes, 102,800 bytes, 138,512 bytes.
The driver can be started or stopped from Services in the Control Panel or by other programs .
The program is not visible.
It is a Verisign signed file.
The file has a digital Signature. tmcomm.sys is not a Windows system file.
There is no detailed description of this service. Therefore the technical security rating is 19% dangerous, however also read the users reviews.
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