press "Delete" when the system starts up to enter BIOS.(The mathod might be various depends on brand of your system, your user manual may help you) Then find a option such as "IDE Detection" or the like.; W. T; U; R' L6 h" P( ~2 _: z
You know, I mean, you should let the BIOS to recognize the newly installed HDD. 7 |* V0 L, c \6 K0 d; y2 RPS: against your description, you mayy MEMORY may meet difficulty. unplug them and reinstall after proper cleaning.