power supply for pc

Open the PC and look at it. See if it has a nameplate you can read. If the PSU is top mounted in the case, the nameplate may be facing the wrong way to see. In that case, you'd have to loosen the cables from any tie downs they may have, unplug them from their devices, and remove the PSU to read the nameplate.

Do you have a pre-built PC? If so, what is the make/model number of it? We might be able to track down the info that way.
 


Biostar g31m is not your PSU (power suppy), that's your motherboard: http://www.biostar.com.tw/app/en/mb/introduction.php?S_ID=505

And there are 3 different wattage versions of the GT 730...
GT 730 DDR3, 128-bit 49W
GT 730 DDR3, 64-bit 23W
GT 730 GDDR5 25W
So I need to know exactly which gfx card you want to use.


 
I am thinking of buying a new lappy after few months so that's why I m not upgrading my PC in order to play some games for tym being I m getting a graphic card so I can run on my old PC just I m confused whether this 1GB ddr5 will work on my PC or not
I have too had a problem when I start my PC as I have to push my start button 2-3 times in order to start my PC
What would be the cause behind it can u tell me ??