recuva ver. 1.51.1063 hung up

I had a hard drive fail to open for some reason. I downloaded the above version of Recuva and began to run it. the small Scan window popped up and started the process. The green bar began to move. It initially began to show the percent of progress and the number of files found. It is on Stage 1 of 3. It now has been at 66% for 2 days and says 22 hours left. Should I cancel and start over?