steam account problems

[Tj]

I built a new pc and did a fresh format on the hd.I cant remember my password so i did the retrieve lost account thing and got the email from steam with a 5 digit code in it.I entered the code manually as it looked and also tried copying and pasting and both ways i got the error saying the code was incorrect.I have done it multiple times and got different codes and same thing every time.Help me out.