[SOLVED] Machine gun clicks on boot up

Replaced hp cd writer 7200 which never seemed to work with a phillips 1200 series burner.Discharged static before opening cabinet and paid attention to cables and placement,believe I have all correct.Restarted machine and get only a rapid click and flash from lights,monitor,keyboard,speakers,etc...fan attempts to start in rythmn to these clicks.Computer will not turn off when switch is pressed,only way is to unplug it and clicking stops in about two seconds.Tried reinstalling previous drive,still clicks.Disconnected all cables to all drives (2 cd,hard,floppy)still clicks.Baffled....did I cook power supply or worse?

 

Hi skijuan, welcome to TSG.

Where does the clicking noise appear to be coming from? The power supply? The fan ontop of the processor?

 

Took your advice ,bumped rear connector of hard drive accidentally and everything returned to normal!Feel stupid but happy,thanks.