|Why don't you just clean your computer? If you do a reinstall, you will lose everything! All your pictures, videos, music, documents, etc, will be gone, not to mention all your programs & Windows updates. Backup all your important files 1st!|
It will take at least a couple of hours (if not more) to get everything reinstalled & your system up to date again. And if you don't have copies of all the device drivers (chipset, video, sound, network, etc), I suggest you download them in advance.
If you insist on going thru with this, the 1st thing you need to do is enter the BIOS & change the boot order. The CD/DVD drive must be listed before the HDD. Make the change, save the settings & exit, then boot off the CD. If you have a SATA HDD, you will have to use one of the methods outlined in the following how-to:
If this is too much for you to handle, post back & we can explain how to clean your system & get it back up to speed again WITHOUT doing a complete reinstall.