Gpu not reconzing HELP

ok i asked tomshard a few days ago witch gpu i should get a while back they said i should got gtx 650 with my budget and system specs well i just got it and took my othe gpu out and it works so it seems but in the operating system it says i dont have one installed and i know the gpu says i need a 400w power supply but i only have 380w but some pepole said i dont really need that becuase it dosent really run at 400 w and i do light gaming.....i dont understand whats wrong HELP
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More about reconzing help
  1. Use driversweeper or simular software to remove all your current gpu drivers. Power down, unplug the power, remove the current gpu and install the new one. Reconnect power and boot back up. It should default to Microsoft vga or svga drivers but you will have a usable image on your screen. At this point download and install the most recent drivers for your card.
  2. popatim said:
    Use driversweeper or simular software to remove all your current gpu drivers. Power down, unplug the power, remove the current gpu and install the new one. Reconnect power and boot back up. It should default to Microsoft vga or svga drivers but you will have a usable image on your screen. At this point download and install the most recent drivers for your card.


    nvm it just started working 0out of no where like my screen flashed and then it showed my screen in full res so its good
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