hello hackers form the hell
well recently i did hard disk to hard disk copying on my assembled pc which is p3, 20 GB,128 MB RAM,,,
but when i removed the hard disk( i had placed it with the help of power cable of CD ROM),, and the n rebooted then loading ws expectionally slow & the bios ws not showing the CD ROM to my utter horror,, worst when i clicked my computer,, there also CD ROM drive was invisible

what can be the reason for this & how to fix this,, plzz help as i 'm in a terrible mess
expirience is a hard teacher,, it first tests & then give lessons