I upgraded my graphics card and I have a new NVIDIA GTS 250 but when I try to turn the CPU on the CPU fan makes a weird sound, as if the power supply cannot handle it but I already upgraded my Power Supply to Cooler Master 500 Watts which the new graphics card requires, here's the video I took:
http://www.youtube.com/watch?v=vohFMSuX4m4
http://www.youtube.com/watch?v=vohFMSuX4m4