Your computer slowed down just after installing service pack  ?

Yeah ! I too faced the similar problem .

I installed service pack on my windows 7  and as soon as I restarted the computer , Processor usage reached 50%  with no running applications.

Finally found that the cause for this was a process called mscorsvw.exe  process  . This process is responsible for compiling  .net assemblies .

When we installed the service pack which includes the .net updates or pacthes   , it will re compile the assemblies in the background.

Once this process complete ,the  processor usage will return to normal.

If we run the command ” C:\WINDOWS\Microsoft.NET\Framework\(version of framework)\ngen.exe executequeueditems ” It will forcibly process the queued items.

On my computer the active ngen.exe was in v2.0.50727 so , I just right clicked on  accessories –> commandprompt and choose run as Administrator , then typed the command

C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\ngen.exe executequeueditems



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