gtx610 showing black screen after adding it to my computer

Helpmepleas

Honorable
Jun 16, 2013
1
0
10,510
Hey people so today i got my GTX610 and before i had nivdia 210 and when i connect it it just shows black screen no nothing can someone explain why is this happening and how to fix it


Yes my power supply is good its 450 and all i need is 300.

and when i put my old card back its works
 

heshrons

Honorable
Jul 20, 2013
3
0
10,520
Check it by installing it on some other computer if it works then your computer power supply should be increased & also check your motherboard compatibility cuz some graphicard need high power motherboard.