Well i dint know the reason behind this. Which you revealed later.
I dont support your cause. Always be honest to your parents atleast, dont cheat them. Have some convincing power and you will get what you want.:cool2:
But for knowledge purpose:
No need to boot from a live os disc. Simply log into your a/c and in taskmanager kill explorer. exe. Then start cmd.exe
then delete those files. located in c:\windows\ & c:\windows\system32 or any files you wish to delete.
But after doing so what if your parents call some engineer then???
You will even screw your future upgrade then.:bleh: