Computer shutdowns automatically while gaming after installing a new GPU.Please help.

Hello friends
I just got a new Graphic card (HD 6670 DDR5).
So when I was playing NFS MW 2 on my PC,I experienced freezing in the game for like 5-10 seconds then again everything went back to normal.
But yesterday while playing NFS,my pc froze for many seconds so I had to switch off the power supply as there was no response on my PC.
I thought that this happened due to loosening of power cord or something.
Today while playing Far cry 3 on medium-high settings on 30 fps my PC suddenly froze and shutdown automatically and restarted.
I don't know why is this happening.
My gpu idle temp is around 39 degree Celsius and I don't know about the load temp.
My PC has a fan on CPU,one on GPU and one small fan for exhaust.
I am only 16 years old and saved money to buy my first GPU and now this stuff is happening so I'm very much panicked.
My PC specs are
3 ghz dual core e5700 (OCed to 3.3ghz,I'm gonna downclock it to stock)
4 GB DDR3
HD 6670 DDR5 GPU
450w PSU Frontech 12V 19A (Its a local brand but I did research on Internet that this PSU can handle my rig easily).
So please suggest me a solution for this problem.
Thanks for reading.
2 answers Last reply
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  1. You must not have done much research. When it comes to power supplies it not just about wattage. Poor quality psus(like what you have) have voltage regulation and ripple problems this will lead to an unstable system, shutdowns, and can damage other components. For what you are seeing the psu is the prime suspect.
  2. Harshilvijay said:
    Hello friends
    I just got a new Graphic card (HD 6670 DDR5).
    So when I was playing NFS MW 2 on my PC,I experienced freezing in the game for like 5-10 seconds then again everything went back to normal.
    But yesterday while playing NFS,my pc froze for many seconds so I had to switch off the power supply as there was no response on my PC.
    I thought that this happened due to loosening of power cord or something.
    Today while playing Far cry 3 on medium-high settings on 30 fps my PC suddenly froze and shutdown automatically and restarted.
    I don't know why is this happening.
    My gpu idle temp is around 39 degree Celsius and I don't know about the load temp.
    My PC has a fan on CPU,one on GPU and one small fan for exhaust.
    I am only 16 years old and saved money to buy my first GPU and now this stuff is happening so I'm very much panicked.
    My PC specs are
    3 ghz dual core e5700 (OCed to 3.3ghz,I'm gonna downclock it to stock)
    4 GB DDR3
    HD 6670 DDR5 GPU
    450w PSU Frontech 12V 19A (Its a local brand but I did research on Internet that this PSU can handle my rig easily).
    So please suggest me a solution for this problem.
    Thanks for reading.



    Get something from tier 1 or 2.

    http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html#15349669


    That power supply is utter garbage. No overclocking, you might blow it up and take pc components with it.


    Replace as soon as possible.
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