Game lags and display dims in my laptop

usmansherygammer

Honorable
Oct 1, 2013
8
0
10,510
Hi, my problem is that i have this 2nd hand laptop of ASUS model 550JK. When i play game like COD MW1 on full graphics, game lags in 2-3 seconds intervals. fps drops from 250 to 30 and most important (which i didn't found in other cases online) the brightness also drops to very dim feels like charger is removed. At first i thought it is CPU as it's temperature was 95C (all 4 cores) while playing game. But i loaded CPU to 100% (which was 20% used by game earlier) and played game and fps never went too high so it may lag. GPU (NVIDIA) temperature goes up to 79C and probably it is causing this. I played game with Intel and it ran fine around 100 FPS. I have done service of its fans and paste but doesn't seem to be working. Any idea? I don't have it's original charger can that be a cause? Like insufficient power supply?
If it is no use then suggest me some laptop around 1000$ that can be replaced by it. Thanks
 

usmansherygammer

Honorable
Oct 1, 2013
8
0
10,510


Ok i have applied for a genuine asus charger. Will let you know soon what it does. Can you give me some good options for other laptops around $1k (new) that can play good games like this asus one.