The manufacture may not have given you copies of your software.
You should however have a CD or floppy disk labeled system recovery that came with the system.
Or, you were supposed to create when you first booted up the system.
CAUTION: Many systems that have a hidden recovery partition do not actually allow you to install the software, or perform a repair installation.
What they have is an "image" of the hard drive as shipped.
When you restore the image, your computer is returned to the exact state it was when you bought it.
You usually loose all updates, user files, and personal software.
Proceed with caution!
Make sure that you back up your critical files first!!!
Chas