Hey guys, I have an issues and I would like to ask if there is any other ways to determine the issues?

I have C2D pc and having a bootloop issues and I am unable to do anything.

The methods I have done:

boot with CPU+Cooler+GPU: fans on and off
have checked the thermal paste and clean the cpu fan : still the same results.

Specs:
C2D E4000 series
gigabyte P35 board
Kingston ddr2 ram 4gb
ATI radeon x550 gpu
acbel 510W psu
seagate 320GB drive

Tia