HomeGroup makes it easy to share pictures, music, documents, videos, and printers with other people on your home network. You would have had to created a homegroup first before you will have a password to use to join other computer to your homegroup.

1. Open the Control Panel (all items view), and click on the Network and Sharing Center icon.
2. Click on the Choose homegroup and sharing options link.
3. Click on the View or print homegroup password link.
4. Write down this password down, or click on Print this page to print the passoword. When done, close this window.

NOTE: The password is case sensitive, so it will need to be typed exactly as it appears here when used to join a computer to the homegroup.

Windows 7 Auto Login/Logon was disabled by default. To log on Windows 7 automatically, you can easily configure it even though you are not a computer expert. Continue for the steps:

1) Click “Windows” or “Start” button, on the Search dialog box, type “netplwiz“, and then press Enter (or Return, or whatever you call it.)

2) Highlight the User Name that you want to use to log on the system automatically, then uncheck “User must enter user name and password to use this computer“, which is checked by default in Windows 7. And then, click “Apply“.

3) In “Automatically Log On” Windows, enter your password twice so Windows 7 would remember it for next logon.

4) Click “OK” to exit the settings.

Reboot your Windows 7 machine and auto login in Windows 7 should be activated, without asking the annoying password every time. Please keep in mind that by disabling the password feature also decreases the security level for your Windows 7 system. Only do this if you do not share a computer with other users.

Indian security researchers have released proof-of-concept code that can be used to take over a computer running Microsoft’s upcoming Windows 7 operating system, despite earlier promising not to make the code public for fear it could be misused.

VBootkit 2.0 was developed by researchers Vipin Kumar and Nitin Kumar and is now available for download under an open-source license.
Vbootkit 2.0 currently only works on Windows 7 ( x64 edition ).

Download Vbootkit 2.0 source code

Vbootkit 2.0 Attacking Windows 7 (x64) via Boot Sectors presentation

VIA: nvlabs.in

Accessing a Windows computer without knowing the password is fairly simple with this free tool called Kon-Boot .There are alternatives like Ophcrack etc, but those rely on grabbing the SAM hashes and cracking those. What sets Kon-Boot apart is that is modifies the kernel on-the-fly while booting (everything is done virtually – without any interferences with physical system changes) and allows you to log into any account without entering a password. All you have to do is insert a boot (cd or floppy) disk burned with Kon-boot software(110kb) in to the computer and boot up.


Kon-boot which was initially started as a small project for Linux (mainly Ubuntu),where it allows to log into a Linux system as ‘root’ user without typing the correct password or to elevate privileges from current user to root. Now it was moved to windows platform where it enables Windows users to login to any password protected machine profile without any knowledge of the password.
This program works with the following versions of Windows: XP (SP1, SP2, SP3), Vista (Business, Ultimate), 2000, Server 2003 and 2008, and Windows 7. Kon-Boot also allows you to boot Linux (distributions: Ubuntu, Gentoo, Debian and Fedora) without a password as well.

http://www.piotrbania.com/all/kon-boot/