Symptoms of graphic card not supporting

[saagar4u]

Hello, i have just bought zotac geforce 9500 gt...but my pc randomly shuts down...previously i was using 9400 gt nvidia..without graphic card pc works fine..Please help..

 

[geekapproved]

What power supply make and model are you using?

What are the rest of your computers specifications (cpu, memory, hdd's, etc)?