Not Feeling Good

It start with my computer got infected with virus, I bought a new external hard disk to back up my photos. I then formated my computer which now back to normal but!... Damn that external hard disk that I put many of my photos suddenly cannot be open. It kept telling unreadable or corrupted. C did tried to help but the same still. I hope I can still recover my data inside, I going back to the shop in Karamunsing where I bought it. You think is there any chance to recover that?