Here's a good solution for you, though its not something like you restarting the computer, it does help alot in clearing all your memory and make it as though as you've restarted your computer, and the magic is...within 5-10 seconds.
1) RIGHT-CLICK on your DESKTOP
2) Select NEW->Shortcut
3)In the shortcut field, copy the code below and paste it there.
%windir%\system32\rundll32.exe advapi32.dll,ProcessIdleTasks
I myself have tried it, and I see no problem in this coding. Feel free to try it....
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