Posted March 3, 201212 yr We have Windows 7 x64 bits Ultimate systems. We were using Trend Micro Titanium AntiVirus and works fine since summer 2011. Then, we install Windows 7 x64 bits Service Pack 1 recently. Well, everything not doing well lately. One of the problem is Disk Defragmenter will not start. We remove the troublesome Antivirus programs. However, Disk Defragmenter still does not start. When click in System Tools, nothing seems get executed and the hard drive will make lots of noise for around a minute. Then, nothing happens. We check, the file c:\windows\system32\dfrgui.exe is still there. Tried to execute this, nothing happens. Preform disk scan using sfc. Found everything OK. So, how can I re-install this disk defragmenter? Continue reading...
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