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.0 Y# e% Y& p. F- D# o
You know, I mean, you should let the BIOS to recognize the newly installed HDD. / j+ i& ?4 i. z6 ~! OPS: against your description, you mayy MEMORY may meet difficulty. unplug them and reinstall after proper cleaning.