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.3 _; f5 |$ {+ O9 Y+ z% |
You know, I mean, you should let the BIOS to recognize the newly installed HDD.5 L( }: }% q* O
PS: against your description, you mayy MEMORY may meet difficulty. unplug them and reinstall after proper cleaning.