2011-11-01, 06:42 PM
If its a newer laptop you can restore the OS using the recovery partition on the HDD, such as for toshibas hold down "0" 1st splash screen. If there is any data that is needed from the old OS which seems unlikely you can use a SATA connector to the current HDD to another computer, of all else fails bring it to your local computer shop, most have a disc that can wipe passwords from windows, but will charge a fee (around 30). Hope this helps (my best recomendation would be full OS restore from the HDD, nice clean slate).