PSU problem or Mobo compatibility problem?

HeavyDrugs

Reputable
Mar 20, 2014
4
0
4,510
I bought a Radeon HD 5450 and I installed it and everything, just didn't install the drivers. I plugged my monitor into the 5450 and my monitor just goes to sleep. I have the >Lenovo ThinkCentre Edge 72 3484-FDU< and my PSU wattage is 180. Do I need a new PSU for my gpu to work?

P.S. If so, how I find out if a PSU will fit into my tower?