Wanna know how to lock your computer just by removing the USB stick connected to it..??
This trick will boot lock your PC, which can't be started without the USB stick which contains the boot files. In short, you can use your USB stick as a key.
Caution: You will be playing with the boot files and the BIOS settings of your computer, I recommend you to do two things before attempting this trick.
1. Have a windows recovery disc.
2. Create a system restore point.
Here are the steps:
1. Unhide all the files which are hidden and protected by going into any folder->click tools->folder options->view->show all hidden files and also un-check the hide protected system files.
2. Go to the drive in which windows is installed. (Generally its c:\) Search for the files
boot.ini
ntdlr
NTDETECT.COM
then copy all these files onto your USB stick.
3. Now restart the computer, press 'del' or in come cases 'F8' to enter the BIOS setup. Now once in BIOS enable USB device as your first boot device. Save the changes and reboot the system.
4. Now if all is fine you will be able to log into windows. (If not, goto the BIOS again and change the first boot device to hard disc). Once you are into windows rename the boot.ini file to boot.bak
5. Remove the USB stick and restart the system. Your will get error messages saying invalid boot.ini or windows could not start.
6. Now try plugging in your USB disc and restart. Volla!!
P.S In case anyone has any difficulty or query please leave a comment with your mail id and i'll get back to you in a days time.
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