GTX 970 not working in m5a78l-m usb3, is it non compatible, doa, or have I missed something?

hatmonkey

Honorable
Apr 25, 2013
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10,510
Hi, I purchased a MSI GTX 970 4GB, assuming I could pretty much plug it in and get to it. However, no output seems to be reaching my monitor. The power supply seems to be working as the lights/fans come on, but nothing shows up on my screen (everything is tightly screwed in). Here are my relevant specs, is it non compatible or have I missed something?

m5a78l-m USB3
AMD FX8350
16GB (2x8gb) Corsair CMX8GX3M1A1600C11 XMS3
(power supply is 650 watt)
Windows 7

I can't really afford a new motherboard so any help would be great!