Guys please help computer wont turn on at all after i installed SSD

I just got an intel 320 80gb ssd today and here is the steps i did.
1) Turn off comp
2)unplug my hdd(INstalled in IDE)
3)went to bios select ahci mode)
4) plug in SSD
5) installed window 7 ult 64
6) Turn off comp
7)plug in hdd
9) Now heres is where my trouble begin the FIRST Time it BOOT UP and then hangs at the win7 loading screen
10) im like crap forgot to change boot order so i turned it off
11) Cant turn my computer on at all , as in it will start for like .5 secs and then turn off.

I about to give up i dont know what i can do to make it boot, could it be that my psu is not giving enough power? I boot it up the 1st time and it worked fine.
Im sitting here with my ssd unplugged as its the only way the computer will turn on.