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My computer wont turn on after i installed a new graphics card

Last response: in Graphics & Displays
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September 4, 2011 6:52:18 PM

I originally had a GT 240 video card but i bought a ENGTS 250 from Asus. After i installed it, my pc wont power on, a few times it does but shuts down in a few seconds. But when i switch it back to my old card, it boots just fine....

My spec:
intel Q6600@ 2.4 GHz
GT 240 1GB
300 watt PSU
a c 130 U Graphics card
September 4, 2011 7:27:48 PM

The most probable cause would be that your PSU is not quite up to powering the new more powerful card.
Yes i have just checked and the 250 uses twice the power of the 240.
I'm guessing you have had to rig up a second PCIE cable for the card using a 2x Molex to single PCIE cable adapter ?

There may be different versions around but the 250's i have seen use 2 X 6 pin while the 240 does not use a PCIE power cable.

As i said i have checked it out and there is no way you could expect to run that card on a 300 Watt PSU even a good branded one.

Mactronix :) 
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