The laptop should have either come with disks or with a utility to allow you to create them, which is commonly not done
Can you boot it at all, even in to safe mode. If you can, and there is a utility, you might still have a chance. Otherwise, you will probably need to contact the Vendor for a new disk, which can be costly.
If you can acquire/borrow a disk with the same O/S and service pack level, you might be able to do a repair.