Reboot and run in safe mode in windows 7,Vista,XP or 2000

Insert the CD then reboot. While the system is booting, hit the F12 key to access the boot menu (this could be a different key depending on your system.
1.) Click the "Start" button from the taskbar. Select the "Turn off computer" option if you are running a Windows OS Operating System before Windows Vista, or select the right arrow in Vista. Select the "Restart" option
2.) Press and hold the Ctrl+Alt+Del keys simultaneously. Do it again. This will reboot the computer
3.) Shut down the computer. Sometimes the computer will not respond to a reboot. Maybe the keys are temporarily disabled or the system has chosen to completely ignore you. In these rare cases, it may be better to shut the computer off using the power button. If you do shut off the computer, press and hold the power button for 3 to 5 seconds. Then be sure to wait a minimum of 45 seconds before turning it back on. This allows the capacitors in the computer time to discharge, which allows the memory (not the hard drive) to do a full dump of data. This allows a cleaner restart when you turn the computer back on.
4.)Disconnect the power cord. Do this as a last resort. Unsaved data may not be retrievable with this option, but sometimes it is the only option. Reconnect the power cord. Turn the computer on. else Insert the CD then reboot. While the system is booting, hit the F12 key to access the boot menu (this could be a different key depending on your system. If you have a problem with your hardware configuration or your computer's display drivers that prevents Windows from loading normally, you may be able to resolve the problem by booting into Safe Mode and changing the relevant settings. To enter Safe Mode in Windows 7, Vista, XP, or 2000:

Note: If you have more than one partition installed, you may need to select an operating system and press Enter before entering Safe Mode.
Turn on or restart your computer.
After the memory test, the words "Starting Windows" will appear on a black background. When this happens, press and hold the F8 key. This will present a screen with the following options to choose from. The exact moment that F8 is pressed will determine the contents of the list, and the list may vary from computer to computer. For example, your computer may not do a memory test or it may have a SCSI BIOS to load in addition to the motherboard's BIOS. If you have trouble getting the list below to appear, restart the computer and then press F8 repeatedly while the computer is starting.
Safe Mode: Boots Windows with only the basic drivers needed to load the operating system. Uses basic drivers for mouse, keyboard, display (VGA), mass storage, and default system services and drivers, with no network components. In Windows 2000, a log file will be created to track the progress of the system boot, which is located in the Windows 2000 folder.
Safe Mode with Networking: Loads the Safe Mode configuration, but also enables network devices and services. In Windows 2000, a log file will be created to track the progress of the system boot, which is located in the Windows 2000 folder.
Safe Mode with Command Prompt: Loads Windows in Safe Mode, and, after logging in, opens a command prompt instead of the normal desktop. In Windows 2000, a log file will be created to track the progress of the system boot, which is located in the Windows 2000 folder.Note: You should try booting to the command prompt only if you feel comfortable operating within the DOS environment.
Enable Boot Logging: Boots Windows with all of the normal files and drivers, but writes their status to a log file at each step. In Windows 2000, this log file is located in the Windows 2000 folder and is named ntbtlog.txt.
Enable VGA Mode: Boots Windows using a plain VGA 16-color 640x480 display driver for the highest level of compatibility with video cards. In Windows 7 and Vista, this mode is called Enable Low-Resolution Video. It is otherwise identical.
Last Known Good Configuration: Boots Windows using the last registry configuration that is known to work. This is a way of undoing problems created by installing incorrect drivers or possibly by registry corruption. It will not, however, fix problems caused by corrupted or missing files.
Use the arrow keys to move up or down this menu to make your selection, and then press Enter. If you need to update software or access the Internet while in Safe Mode, select "Safe Mode with Networking".