Best power supply for emachine ET1810

yes i added a geforce 210 g card a while back...what happend was there was a power outage not to long ago that occured while my pc was off.i tried powering it on after and no luck...it seemed that the previous 250 watter was doing its job of course until this power outage occured.iam on my ps3 right now.
 

this power supply will fit forsure in my pc