My pc is turning off and on again and again please help!!

Nicolas Barrientos

Honorable
Mar 24, 2013
22
0
10,510
hello,
whenever i turn my pc it shuts down and the turns in by its own
here is the exact example
http://www.youtube.com/watch?v=-jTPuciQE9Q&list=FLx8nLA59tR9_KHqaHzANS0g



i didnt made this video but this is the exact problem i have
it doesnt show up screen display

i bought a new graphics card
-xfx 7750 core edition 1gb gddr5 single slot i had an xfx 8500gt i uninstalled the drivers and whenever i put the new card in it shows this problem and if i take the card out it starts normal


-a spektra 650 watts power supply i think the problem should be that but not sure

-core 2 duo e7200 @2.53 ghz

-3gb of ddr2 ram

-an ecs motherboard
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Im going to upgrade this sistem in a couple months

-fx 6100 @3.3ghz

-8gb corsair vengeance ram ddr3

-some motherboard that fits well with the system

thanks in advance