Hello, i'm here now to post my suggestions in relationship of this topic and what i have quoted about my message. I suggest simply of DO NOT USE THIS "TIP" for speeding up the boot of windows, cause it is simply useless, and you will go in my same situation, with this folder that's updating with those useless files that windows 7 DO NOT NEEDS, making only extra hard disk works after the user login. You also WILL NOT find any solution in the web for return back: those damned files will be refreshed every reboot, growing in fragmentation. If you need to speed up your boot process, simply open the Command Prompt and paste this: rundll32.exe advapi32.dll,ProcessIdleTasks Wait some minutes, and Windows wil do EXACTLY the same thing, without the creation of those stupid files. I have now reformatted my system after 3 days of hard work for transfering all my personal settings and software to a brand new pc, and i will NEVER use another time this called ^TIP^. Bye all.