A recent windows update has caused many systems to artificially cap their processor speed based on a "recommended" speed from Microsoft. If your CPU is overclocked higher than the number Microsoft has decided to set this cap at you may notice your CPU not reaching its full potential. You can remove this limit and once again allow the CPU to reach the speed set in the BIOS by following these instructions.


Go to C:\Windows/system32 and look for the following file "mcupdate_GenuineIntel.dll"


1.- Right click on the file and select "Properties"


2.- Go to the "security" tab


3.- Click the "Advanced" button


4.- Near the top of the resulting window there should be an "Owner:" line and "TrustedInstaller" is likely going to be the currently listed owner.


5.- Next to that click "Change"


6.- In the resulting window there is a field "Enter the object name to select (examples):"; type your username in this window and click on the "Check Names" button. This should change the contents of the field to something with an underline. The format should be COMPUTERNAME\USERNAME.


7.- Hit OK


8.- Now back on the window titled "Advanced Security Settings for mcupdate_GenuineIntel.dll" click the "Add" button near the bottom left of the window.


9.- Near the top of the resulting window click "Select a principal"


10.- Same window as step 6, same thing needing to be done as well


11.- Click OK to return to the "Premission Entry for mcupdate_GenuineIntel.dll"


12.- Place a checkmark in the box labeled "Full Control" and then hit the "OK" button on the window.


13.- On the "Advanced Security Settings for mcupdate_GenuineIntel.dll" window click the "OK" button


14.- On "mcupdate_GenuineIntel.dll" click "OK"


Now you should be able to rename it, it'll give you two UAC prompts when you try, but you just need to click through them. If it gives you an error after the two windows that you need permission from yourself or from TrustedInstaller then go back through the steps as you may have missed one.