Gaming Performance Has Slowed Down, drop in FPS, need help sometimes locks up and freex

Hey I bought a Alienware M14x around 2-3 months ago.
I have a Intel(R) Core(TM) i7-3630QM CPU @ 2.4 GHz 2.40 GHz
And 16 GB of Ram
Right, a couple of days ago one of my applications froze then it said 'windows explorer is not responding' (which never happens) so pretty much it would lockup and freeze, then it became more common. And then games like Lol would drop from 60 FPS to 30 FPS, and i bought Arma 3 the other day and i run on 12 FPS, and so i re-installed it then i had 60 FPS and when i went in game, after a couple of seconds it would go back down to 12, even with skyrim, (usually runs perfect with Ultra setting) sometimes either it would Just run slowly or sometimes run completely fine then after a couple of minutes, it would run really slow ( drop in FPS).
I did a real temp test before i played skyrim then after i played it for a couple of minutes.
Before: Before Photo by Stewart_Milne | Photobucket
After: After Photo by Stewart_Milne | Photobucket

Can someone please help?

 

What about your Gpu temperature? While the CPU is a little hot, it hasn't reached the threshold for throttling. Loosing half or more FPS imho is more likely related to the Gpu

 

How do i check my gpu temperature, and when im playing arma 3 . everytime i have to lift my laptop a bit upside down so it makes a loud fan noise, then its not laggy anymore for about 20 seconds

 

you need to pro up the back of your laptop so it can suck cool air in better/easier or get a laptop cooler. You can monitor all temps with hwinfo (free tool for temp monitoring).

 

well here are the results, i dont really know how to use it, the core temps on the left just kept changing going up and down

2_zps2b77a40a.jpg Photo by Stewart_Milne | Photobucket

1_zps868177dc.jpg Photo by Stewart_Milne | Photobucket

any ideas? i really need help

 

Download hwinfo, it will read your system temperatures, including your GPU

 

yeah those were the screenshots, and the fan doesnt seem to run while playing games, even though i leave the laptop on the edge of my knees while revealing the fan, and then when i lift up my fan upwards , it then runs then my laptops fps goes higher

 

Check your fan connector. Sounds like its either loose or you might need a new fan.

 

well i sitll have warranty, if i open it up then its gone, so should i take it to them

 

I would have it checked out under warranty for sure.

 

You can open your Alienware to perform cleaning, changing ram, CPU, hdd/ssd, and it won't cause your warranty to get voided

 

so do you think its the fan?

 

I'm pretty sure its the fan. Personally, I would call alienware and tell that that you believe that your fan has stopped working and that you would like it replaced. They should take of you from there. Hope this helps!!

 

@bigtonyman, well whats the reason that my alienware sometimes locks up and freezes

 

As bigtony said, it could be the fan. If it doesn't work, and temperatures rises, this could explain the lock and freezes you are experiencing. Have you installed hwinfo?

 

Edit: found the pic with your info, I would bet a lot of money that you are running the 320 drivers from nvidia. They DO NOT WORK with Windows 8 in my experience, get those pos drivers off your rig and put on the 310 or 314 drivers. You may need to reinstall games afterwards