Laptop Formatted, Operating System Won't Install

I have a HP laptop that had Windows 7 installed on it, one day i got a message saying there were updates available, which included Service pack 1. So, i went ahead with the install however, when my system rebooted after the install there was an error message (i cant remember what it said, it was a while ago) so i immediately tried to put my windows 7 disk in, which would not boot. I have gone into bios and changed it so that it was the first boot item but still didn't work, even with F8, F12 etc. So i decided to borrow a recovery disk from a friend, it is a general one of the internet, i went through the repair options which didn't work, so i decided to format the hard drive which was successful. So now when you boot, as you would expect, you get a no operating system message. I try to put my Windows 7 disk back in to install it fresh but it still wont work, its like theres nothing in the cd drive.