Procedure for Dell Inspiron 300m, Sony and Toshiba Satellite, Other systems may be similar.
Insert cdom into cdrom drive.
Restart your computer.
As you computer starts, look carefully at lower left of your screen, you should see F2:Setup , F12: Boot menu.
Press F12
The Boot menu lists the disks, network boards and cdrom drives installed on your pc. They differ between computer models.
Choose boot menu.
Here's what a boot menu looks like, yours might be different.
Choose the one resembling a cdrom drive. If you chose the incorret one, no damage is done. Use the arrow keys and select your cdrom drive, Once selected press the "Enter" key.
The system displays:
--------------------------------
Press any key to boot from cd
-------------------------------
Hit any key.
For Toshiba computers: Repeatedly press lower case character c as system boots, system should boot from cdrom.
To boot into windows repair
Repair windows, owtherwise, if booting virus removal dvd, follow vendors instructions.