HD is gone from Disk Utility

[Fabulo]

Hey Guys,
First of all, I'm Dutch, so excuse me if my English is not perfect.
I've got a problem with my MBP. It finally came back from repair centre today. My Harddrive was broken, so they put a new one inside. Everything worked OK, until i decided to install Snow Leopard, and after that put my superduper backup from my external HD to the MAC hd. I restarted the MAC while I kept holding down the "C" button, (snow leopard disk inside) I went to install OSx menu,-> Disk utility-> MAcintosh HD->last TAB (can't remember the name)-> and dragged the External HD in the first bar, and mac HD in the Second. Also I checked Remove Mac HD when copy the Backup to MAC HD. I pressed the button and the EST time was about 2 hours. After one hour my HD made some noise and gave me an error: Something with Failed to load or Failed to copy. After that it did removed my Macintosh HD drive. It's just GONE! I don't know what to do.. Can''t install my mac it's completely useless right now..

Here are some pictures describing the situation

and another one, hope you guys can use it

luv u all

 

[airplaneman]

Maybe the HD is bad 🙁. You've tried it numerous times, right? Have you tried the old HD in a different case? Maybe try putting it back in the machine.

 

[Fabulo]

My HD is gone, it's at the repaircentre.
But, the good news is, I actually got everything back to work except for the part that I've copied superduper backup to Machintosh HD, took about 2 hours, and it did finish the job. but when I restart my Mac at the Internal Disk it gives me a pop up to restart my mac with the powerbutton...