Plz help figuring out the problem!!

hi everyone!!
i am having a dell studio 1558 gaming laptop with intel core 15(450 M),4 gb ram,500 gb hd,ati radeon hd 5470-1 gb.

While playing some hardcore games my laptop speed goes very very slow... Thereafter,everything becomes slow..
I cant figure out the it any hardware problem???
Is graphic card or RAM is faulty?????

plz Help by telling the possible reasons for it.
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I have a very similar Inspiron i15.

Usually it's the hardcore game. Laptops are not the greatest choice for games and if you read 7723-6122_102-510824.html you see we went over installed apps and found things to eject.

You may want to do the same.

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so what should i do? Should i go for overclocking or is there any other solution??

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(NT) Overclocking won't help.
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Odd question.

If you read the supplied discussion you discover we found out what it was and overclocking didn't help.

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