Okay so I haven't tried anything instead of changing the rotations of the Processor and it worked. But now the thing is that I got overexcited and turned on the Power right up and didnt do anything but what appeared is the power button is orange for ever and there's a number 1 and 2 blinking every 1.5-2 seconds. I'll post this issue again I guess.
3 days ago I was on my way to find my Wireless Internet USB and my Dell Mini-Tower largest version OptiPlex 780 was on from an hour or half more. When I came back, a touch on the Multi-plug got itself shut off and I simply opened the heatsink and took a look at it. Put everything back, and all I see next is a Power Cycling- A process by which your PC is turning on and off continuously without display connecting. By my research so far, if I hold the Button below the power supply light at the back, the amber orange light comes by and it goes infinitely. I then held the power button, waited 15 seconds and passed the PCU/BIST test and also if I hold the PSU/BIST button the desktop actually works fine! Meaning, the CD-ROM works, fans spinning, no power light at the front, etc. I've checked RAM, Heatsink, processor, 4pin cable from PowerSupply and stuff, but what next is not known by me.  Please get this sorted by September as I really need it asap.
OptiPlex 780 Mini Tower (largest version) power cycling, amber light, etc. 
Please help asap