Answer: Well, you might have a try of the following steps, it's a good tip to let you get into your computer with a chance:
1. On the Windows logon screen, press Ctrl+Alt+Del twice to bring up the classic logon box.

2. Type "administrator" in the username box and leave the password box blank, then press Enter.

3. After logging into, click Start button to select Run box, then enter "lusrmgr.msc" on it and click OK. This will bring up the Local Users and Groups window

4. Click Users folder, right-click the account that you need to reset the password for, and then click Set Password to reset its password.

If this doesn't work, you best choice is to reset the administrator password by using a Windows password recovery tool. Windows Password Breaker is a powerful Windows 7 password recovery tool works well on Windows 7/Vista/XP/2000 and Server 2003(R2)/2008(R2). Through Windows Password Breaker, you can create a bootable password recovery CD/DVD or USB flash drive to reset your forgotten Windows passwords, including Windows Local Administrator, Standard and Guest user passwords, and Windows Domain Administrator password.
1. Download and install Windows Password Breaker in any computer.

2. Burn a bootable password recovery USB/CD/DVD in a few seconds.

3. Insert the burned USB/CD/DVD in the Toshiba laptop.

4. Boot the laptop form the password recovery USB/CD/DVD.

5. Reset the forgotten Windows 7 password in 2 minutes.

After that, you'll be able to access your laptop again without password. To in case of a similar problem, you'd better a password reset disk as follows:
1. Log on to your Toshiba laptop and insert a USB flash drive in it.

2. Go to Start button - Control Panel - Family Safety and User Accounts - User Accounts.

3. Click Create a password reset disk link on the left pane.

4. When the Forgotten Password Wizard appears, click Next.

5. Choose the portable media drive to create a Windows 7 password reset disk, click Next to continue.

6. Enter your current account password in the text box and click Next. Windows will start to create the password reset disk.

7. Click Next and then click Finish in the next window when the progress indicator shows 100% complete.

That's all. Label the USB disk as a Windows 7 password reset disk and store it in a safe place. Otherwise, anyone can change your Windows login password by using the disk.