No secret key

Hi, I flew Windows, after reinstalling Windows, I go to gpg4usb, insert the secret code that you want to decrypt, and I get the error no secret code, how to restore the secret PGP key ?

-----BEGIN PGP MESSAGE-----

hQEMAzjAqHtPbyS1AQf/dc4BVzIkcyKqTE18c3+Ytqz0SWLALwuM5KOepsSTd/bC
R27PCX15uDpNF+7PTIcheZ8T+csS6/tbRYAreomTfW5gGHx4lwr8l2QX6xhSDfhO
cwZW7X+lppsYpueBXo269NxzIaRuRjOBQmbzeMsnyCyFeNQtcHv0HiXmM/+RvodV
XTA1PrlDwg3PvTUAWHlXL7HyejRvKVpUVgWh92veXjiXG2hGtirCQAOtOQimu6F3
x7q2od4DKAfZqpDJWW/Y7JP8u4fOgjQliHzNPeKHzm3yO7i4RWboedt0lI5wWlW5
rmcnSRFofyGiz0A9bLOaFXxdvfPhSzBIw7Qghe70cdJlAexiB6MBuSrv4J1mfCIn
ANkKgFKJ+Fvct1iodI/QFHng15X+4sV/UvyQ7mOaBgvtBBdzPc2Lp3X4sSj+aopF
UrqjC4cHWz7jHQAztluDIHEBApMeahzCS3KRGqSljXm2XDGu+3E=
=B9Mp
-----END PGP MESSAGE-----

Hi Luigi,

if you were using https://github.com/gpg4usb/gpg4usb, note that this software is not maintained anymore (last stable release 2016).

Your secrect key needs to be saved somewhere to be able to re-import it.
If you have not saved your secret key, there is no way to recover it (of course).

Where did you save or backup your secret key?
(I don’t know where gpg4usb does this.)

Best Regards,
Bernhard

I didn’t make a backup copy,but the original remained on the last Windows

Hi Luigi,
if you deleted the only copy of your private key, then it is gone.
You’ll have to create a new one and ask your communication partners to send
their contents again to you, with the new key. (Make sure you make a backup this time.)

Regards,
Bernhard