M14x FPS Issue

Hey guys so I have a problem with my fps. Recently my laptop broke, hdd disconnected and I went to get it fixed, they replaced my hdd and my motherboard. Before it got fixed I would run games fine and have decent fps in most of them. For example, in League of Legends I would have about 100 fps easy. However now I barely get 60 and after a few games I get 10 fps. Once I restart my computer the problem is gone until I start playing a few games. I

I updated my drivers, graphic card etc. Tried it with and without turbo boost ( I get lower performance when its active )

Here is what I got and what temp it was during my recent league match

Operating System
Windows 7 Home Premium 64-bit SP1

CPU
Intel Core i7 2630QM @ 2.00GHz 48 °C
Sandy Bridge 32nm Technology

RAM
8.00GB Dual-Channel DDR3 @ 664MHz (9-9-9-24)

Motherboard
Alienware M14xR1 (CPU1)

Graphics
Generic PnP Monitor (1366x768@60Hz)

Intel (Dell)
3071MB NVIDIA GeForce GT 555M (Dell) 43 °C

Storage
698GB TOSHIBA MQ01ABD075 ATA Device (SATA) 45 °C

Optical Drives
HL-DT-ST DVD+-RW GS30N ATA Device

Does anyone know how I can improve my frame rates. When i play CS GO I never have this issue