I bought 5 Bitcoin in 2012. I chose hardware Bitcoin and not a Wallet as I was so new to Crypto I did not know what I was doing. My computer was stolen and the drive wiped. How do I get back to my coins?

My computer was stolen... there is no drives anymore everyone. I downloaded software, I purchased a coin with the software, it gave me a string of number and letters. I think I copied and pasted them to a work document and saved it on my computer. Then the computer got stolen In 2012. Hope that helps clarify ????