In earlier beta testing days of Windows 7, it was possible to remove the "Blur" effect from window borders (window titlebar, etc) but the functionality was removed in later builds. Even the RTM build doesn't contain this functionality.
We just needed to alter a DWORD value in Registry Editor and the Blur could be removed.
No need to get sad. "PacMani" @ DA has created a small batch script which replaces 2 RTM system files with the beta ones and also incorporates the required registry DWORD values automatically. So you can get the good old Beta functionality back in RTM build.

Simply download the ZIP file using following link:
How To Instructions:
1. Extract downloaded ZIP file and run "Patch Blur x86.bat" file. If you are using x64 bit version, run "Patch Blur x64.bat" file.
2. It'll take a few seconds and you'll see window without blur.
3. If you want to put the blur back, run "Enable Blur.bat" file. And if again you decide to remove the blur, run "Disable Blur.bat" file.
4. Although you would not need to run "Unpatch Blur.bat" ever, but in case you want to restore the default system files back, run it.
This article was posted by VG in following section: Windows 7.
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Viaxl
I dunno why but seems the script can't do the job correctly
however it works when I manually do it step by step according to content in the script. copied files, restarted service, it worked.
VG
^^ Did you run it using "Run as Administrator" context menu?
Felipe
Hey, I'm having a slight problem. Aero interface doesn't work. I'm stuck with Basic.
I'm running sfc /scannow atm, see if this gets fixed.
But is there another solution?
Thanks in advance.
xaueious
this doesn't seem to work for me either
rtm 7 x64
xaueious
For me, I had to edit the bat file.
For 32 bit, edit the lines:
COPY \Files\dwm.exe %WINDIR%\system32\dwm.exe
COPY \Files\udwm.dll %WINDIR%\system32\udwm.dll
to
COPY Files\dwm.exe %WINDIR%\system32\dwm.exe
COPY Files\udwm.dll %WINDIR%\system32\udwm.dll
For 64 bit, edit the lines:
COPY \Files\dwm64.exe %WINDIR%\system32\dwm.exe
COPY \Files\udwm64.dll %WINDIR%\system32\udwm.dll
to
COPY Files\dwm64.exe %WINDIR%\system32\dwm.exe
COPY Files\udwm64.dll %WINDIR%\system32\udwm.dll
Aaron
Hi xaueious,
When I ran your version of Patch 32-bit System Files.bat, it seem to run through the batch file without running any process, unlike the previous, where it "refreshes" my window.
Omar
Not working for me too, ran as administrator, but aero is disabled, restarted, but still disabled.
Omar
Can u pleeeeeeez tellme how to do it manually?
PacMani
I have now updated the script so that it works again on all systems ;)
MenDart
Win7 64-bit, disable user account,restart,patch your files,works 100%