Modern Warfare2 lagging.............Help

i just bought new game i.e. MODERN WARFARE strangely laggs.when i start th game, it run smooth for 2-3 minuts.after that it laggs for 9-10 sec.again smooth,again lagg..........
i am board of this plz help me.
my system spec. are:
AMD athlon 64x2 dual core 2.7Ghz,
2 GB DDR2 800Mhz,
Asus M2N-MX SE PLUS motherboard.
ATI Radeon HD 4770 GPU.

playing this game offline.......
i have updated my gpu drivers.
plz give me solutions to come out of this..
tell me all possible reasons.
6 answers Last reply
More about modern warfare2 lagging help
  1. what about your PSU?
    Do your 4770 have a power connector?
  2. wa1 said:
    what about your PSU?
    Do your 4770 have a power connector?

    my psu is of 450W
    i have connected 1 DVD writer & external fan.
  3. i think what he means is the card power connector not other devices connected to your PSU. usually the card will perform poorly or totally not functioning at all if there is not enough power supplied to the card.
  4. ^+1 :D
    how about that? Your 4770 have a power connector, right?
  5. Do you mean it stops when it lags?

    I had a problem with the game a while back - it would play smoothly, then completely stop for 5 second or so, then continue playing.
  6. I have just formatted my pc there is nothing problem to play, it's running very smoothly even high graphics settings.
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