I forgot my log in password and i can't open the windows .i try to press F8 and enter in safe mode but it goes to the login first also . my emachines with windows 7

Windows Login Password Recovery is right what you need in your case. The password recovery tool is designed to reset Windows login password once you accidentally forgot it or have no access to your system including Windows 7, Vista, XP etc. By burning a bootable CD, you can enter almost any computer with Windows administrator login password protected within a few seconds. Here are the step by step tutorial, pretty easy, I am sure you can handle it!

Step 1: Download Windows Password Recovery and install it on another computer.
Step 2: Prepare a blank CD/USB and run the software and use it to burn the ISO file to it.
Step 3: Put it into the CD-ROm and restart your locked computer. Change the BIOS setting of your locked computer to make it boot from the CD-ROM or USB drive. Note: start computer and press F2 or Delete to enter BISO setup
Step 4: Boot your locked computer from the created disk and remove your forgotten password. GOOD LUCK!

Forgot Windows 7 password? Option 1: If youhave owned another available admin password, it can work. Just log on yourPC->Click "Start"button->Control Panel->Add or remove useraccount->Select the account you want to reset->Change or Remove thepassword. Then the Windows 7 password will be reset.

Option 2: If not, you'dbetter download and install a Windows Password Unlocker tool to help you removeyour lost Windows 7 password, like Windows Password Unlocker Standard. Itallows you to burn a bootable CD/DVD to remove lost Windows password in Windows7/Vista/XP, etc. on your own.
youcan follow the blow steps to start. It will only take you less than 5 minutes. Step 1: Burn abootable CD/DVD Step 2: Set yourcomputer to boot from CD/DVD Step 3: Remove theforgotten Windows password with the burned CD/DVD Note: If you cannotlog in your computer, you can download and install the program in anyaccessible computer. The CD/DVD can be burned in any computer with any OS.

If you want to save time and without lose anything,recommend you to use a third party software--Windows Password Rescuer.It can recover windows 7/vista/xp/2008/2003/2000 password within several minutes.Or you can use Daos Windows 7 Password Recovery Tool. No need to reinstall your operation system.Only four steps to recover the password:
Step 1: Download Windows Password Rescuer/Daos Windows 7 Password Recovery Tool on another computer.
Step 2: Install Windows Password Rescuer/Daos Windows 7 Password Recovery Tool and use it to burn a bootable CD/DVD or USB flash drive
Step 3: BIOS setting,setup your computer boot from CD/DVD or USB
Step 4: Reset Windows password by a few clicks.You also can use Windows Password Rescuer/Daos Windows 7 Password Recovery Tool to add a new user with administrator privilege to your Windows. With this New user account you can logon your locked computer directly.

1.Click on Start and then Control Panel.

2.Click on the User Accounts link.

Note: If you're viewing the Classic View of Control Panel, double-click on the User Accounts icon.

3.In the pick an account to change area of the User Accounts window, click on your Windows XP user name.

4.Choose the Change my password link.

5.In the first text box, enter your existing password.

6.In the next two text boxes, enter the password you would like to start using.

Entering the password twice helps to make sure that you typed your new password correctly.

7.Click the Change Password button to confirm your changes.

8.You can now close the User Accounts window and the Control Panel window.

9.Now that your Windows XP logon password has been changed, you must use your new password to log on to Windows XP from this point forward.

http://www.recoverlostpassword.com/article/lost-windows-password.html

Lost Windows 7 password? You can check out the top 6 methods for Windows 7 password recovery. It's helpful.

If you have another account on your laptop that has administrator rights, log in into that account and change the password for your account. If you have an administrator account (even if you don't try putting in Administrator and leave password field blank) try using that account to reset the password, otherwise try this for Win7 http://windows.microsoft.com/en-us/windows-vista/What-to-do-if-you-forget-your-Windows-password
If anything else didn't work you can use third party software from Hiren's Boot CD to reset your login password http://www.hirensbootcd.org/download/Hirens.BootCD.12.0.zip