Dell n5110 freezing?

[Arhitekt]

Hi,
I bought a new n5110 a week ago. So far I've always left it running overnight, with the lid closed. In the morning when i open the lid, the screen just stays black, the power button is still lit, so is the power and wlan light. One time the screen was all filled with horizontal colorful lines instead. Either way, only thing that helps is holding down the power button and shutting it down. Now today I also got the colorful lines freeze while gaming (MTA San Andreas), also the sound started looping. This time after restarting it, the time was set to 0:00 but the date was still correct.
The event viewer only says: The previous system shutdown at time on ‎date was unexpected.
I've run the dell diagnostics thing and it didn't find any problems.

Specs:
i7 2630QM 2GHz
6GB DDR3 1333MHz
640GB 5400RPM
GT525M 1GB
Win7 64bit

Any help is appreciated.

[namaiki]

Try check the laptop's temperatures using HWMonitor or similar program.

[Arhitekt]

50 during web, upto 90 on heavy gaming which should be normal on this laptop. GPU tops out at 80.

[barishak]

I bought a Dell inspiron n5110 notebook (4Gb RAM-i5 processor)2 weeks ago, on 15 October 2011 (it was a bad decision), the same day,it began freezing... Intel Turbo Boost Monitor rises to 2.90 Ghz, and freezes...
I contacted the seller, they didn't care.
I contacted DELL support, they accepted the problem and last week they changed the mainboard and the Hard Drive, but the notebook repeats freezing. it freezes 2-3 time in an hour for 1-5 minutes... The seller told me to use the FN + F2 combination to shut the bluetooth and the wireless connection, if I do it, the Turbo Boost monitor descreases from 2.90Ghz to "0 Ghz"..
My question is, can anyone in this forum using a Dell help me to fix my problem? Any idea? Because today I called Dell again (its the 4. time), they told me that they can change the notebook with a new one but it takes between 4-6 weeks. It is a long time....
I need to use this notebook because of my writings. So if anyone knows why this happenes, and the solution, please contact me.
Thanksssssss.....

[balkeet]

does n5110 sucks???

[joanneway]

@barishak.. 1st change heat-sink like i told u.. did u followed my instructions previously? avoid seagate.. mine is seagate momentus 7.2krpm is fine.. avoid 5.4krpm.. go for WD cos mostly dell offered seagate/WD.. hitachi or samsung also not bad.. dun ever click game explorer at main menu.. kill rundll32.exe under task manager.. i posted u how to remove permanently b4. just look around.. turbo boost r usually disable if no mistake.. there is not wrong v ur turbo boost.. during high usage only got turbo boost.. update the latest driver at dell official website & look for correct OS that fit ur N5110. u can PM me if u got doubt..