how can i access administrator account in vista without modifying the original password?

My brother has blocked me from accessing a drive in vista by keeping a password for administrator....
I want to access that drive without his knowledge n without modifying the original one...
Please help me out..

If possible also tell the same for windows 7......

Yolandas5 years ago
You don't.
You can just remove/reset it.Such as a famous software Windows Password Rescuer also just reset/remove it.
ateefahmed (author) 7 years ago
No man,,, just the admin password ... Bt problem is tat i've to login as a guest all the time...
So i wanted to cheat him by opening the admin account without his knowledge i.e., without altering his original password .......
orksecurity7 years ago
Websearch will find you at least one good answer.

("Teach a man to fish and he eats for a day. Teach him to search the web, and you've ruined his productivity for life.")
lemonie7 years ago
Has he set a BIOS password? Get a Linux boot disk (go searching) change the BIOS boot-priority and start off that. Or create a disk partition CD, boot off that, erase the MBR on the boot disk and let him give you control of the machine to fix it (diabolical-laughter goes in here)
(Tired & deranged, take as much notice as you think appropriate)