Do you have the 4-pin CPU Power socket connected? It's near the backplane behind the USB2/LAN ports.
yes, there is and it is connected. what could be the possible problem? the power supply is currently connected and working fine in my motherboard with P4 microprocessor.
What make and model is the PS? Are you using the full 24-pin main power connector? Are you in BIOS configuration mode? Do you get any beeps?
Check all drive and power connections. Also your display connection.
yes, I am using a 2X12 or 24-pin power main power connector. I removed everything except the 2x4 and 2x12 power connector and 4GB RAM, no beeps at all. I will check again the power supply model.
I have an ordinary power supply (Brand Name: Digital, Made in China, 450W only).
Orange = +3V, 16A
Yellow = +12V, 18A
Blue = -12V, 1A
Red = +5V, 1A
White = -5V, 0.5A
Purple = +Vsb, 2A
You're probably on the borderline with that PS but it should power up without accessories. You do need a keyboard, display and a drive but I don't think it's getting far enough in the POST to check even that. Do you have another PS to try? The only way to know for certain where the POST is failing is with an 80h reader. It's a small board that inserts in a PCI slot. In any case, your best bet is to take it to a PC shop where they will most likely have the tester and a certified power supply. The Sandy Bridge is pretty particular about it's power and the POST tester will indicate why where it's stopping. The tester displays a two-digit hex code of the stop location (operation).
Thank you very much for your effort to answer my question.
Finally, the problem is my Power Supply. I replaced the power supply and it works fine without any errors/problems during the installation of Operating System.
You're welcome. Glad you got it going.