Will I fry my motherboard if I put a 500 watt power supply in a Asus M2N68-LA?

No. The motherboard will draw the volts/amps it needs to run the cpu and the integrated hardware. You need the power for the video card - you'll have to use the power leads (usually PCI-e connectors) from the PSU directly into the connectors on the video card (usually a 6-pin connector or an 8-pin connector), and some video cards require two power leads.
 

gbawkin

Distinguished
Oct 3, 2010
6
0
18,510
The card is a NVIDIA GeForce 8400 GS, and the minimum requirement is a 300 watt. As for other componants; I am running that motherboard with NVIDIA Intergrated grapics chipset, processor is AMD Athlon 64 X2 5200, 2 500 GB WD HDD, 1 320 WD HDD, amd a DVD- RW GSA- H60L
 

Randomacts

Distinguished
Aug 5, 2010
795
0
19,010



If you are unsure of how to hook up a PSU there are plenty of guides out there.
 

gbawkin

Distinguished
Oct 3, 2010
6
0
18,510

Oh I know how to hook them up, just never put more power on then the recommended
 

gbawkin

Distinguished
Oct 3, 2010
6
0
18,510

I did install the Antec and you are right they are crap, Damn fan didn't work so I went and got a black widow 850 and it is working like a dream