I have an HP touch smart 600 upon booting up I was given an error message that hard drive failure is imminent. Naturally I installed a new hard drive. After doing so I went to power it on and it only flashed a light at the bottom and made a tick sound for about a millisecond. I still cannot get it to power on the hard drive install was done properly. I have been fixing computers a number of years now and know how to do something as simple as a hard drive install. No damage to the motherboard could have been done during the install. And of course I did try putting the old hard drive back in and it still did not start. This one has me stumped. Any suggestions would be helpful.