While in game my laptop shuts down completely and I don't know what is causing it.i have always played in high-very high med combination of settings and never had this problem. I lowered the video settings all to medium and the problem is still there. I use a Samsung laptop with i5 andnvidia GeForce 310. I already lost a game cuz of this,and I don't want to be penalized,could I get some guidelines/tips on how to know what is causing this or the solution? Thanks in advance. If computer specs are needed I'll post them.

ok,i used a program called msi combustor that makes the computer run hard,for 30 min,the gpu temp reached 89 celcius and the laptop did not turn off so overheating may not be the issue.

the specs are



General

Packaged Quantity 1.0
System Type Notebook
OS Provided Microsoft Windows 7 Home Premium 64-bit Edition
Service & Support 1 year warranty
Notebook type Midsize,
Blu-ray drive

Processor / Chipset

CPU Intel Core i5 i5-430M / 2.26 GHz
Number of Cores Dual-Core
Cache L2 cache - 3.0 MB
64-bit Computing Yes
Front Side Bus 1066.0 MHz

Memory

RAM 4.0 GB ( 2 x 2 GB )
Technology DDR3 SDRAM
Slots Qty 2

Storage

Floppy Drive None
Hard Drive 500.0 GB HDD / 5400.0 rpm
Interface Serial ATA-150
Storage Removable None
Optical Drive DVD±RW (±R DL) / DVD-RAM / BD-ROM
Optical Drive (2nd) None
Hard drive type Portable

Display

Type 15.6 in
LCD Backlight Technology LED backlight
Max Resolution 1366 x 768 ( HD )
Widescreen Yes
Features LED-backlit

Audio & Video

Graphics Processor NVIDIA GeForce 310M - 512.0 MB GDDR3 SDRAM
Camera Yes
Resolution 1.3 Megapixel
Sound Microphone
Compliant Standards High Definition Audio

Input

Type Touchpad,
Keyboard
Features Built-in numeric keyboard

Communications

Wireless 802.11b/g/n
Network Interface Gigabit Ethernet

Battery

Technology 6-cell Lithium ion
Installed Qty 1.0
Capacity 4400.0 mAh

Connections & Expansion

Slots 1.0 x ExpressCard/34 ( 1.0 free )
Interfaces 4 x Microphone input,
LAN,
Headphone output,
USB 2.0,
HDMI,
VGA
Interfaces 4.0 x HDMI - USB 2.0,
1.0 x USB 2.0 - RJ-45,
1.0 x Ethernet
Memory Card Reader 3 in 1 card reader ( SD Memory Card ),
( MultiMediaCard ),
( SDHC Memory Card )

Software

Software Included Samsung Recovery Solution,
Adobe Acrobat Reader,
Microsoft Office Professional 2007 (60 days trial)

Miscellaneous

Color Red/Black
Features Security lock slot (cable lock sold separately)
Cables Included USB cable ( 1.0 pcs.),
Ethernet cable ( 1.0 pcs.)
Compliant Standards RoHS
Localization United States

Dimensions & Weight

Width 16.2 in
Depth 10.7 in
Height 1.6 in
Weight 5.7 lbs

Hello, this might be a hardware related problem. I don't really see anyway that LOL could cause your computer to shutdown.

Can you check your battery? They sometimes degrade.

Do you have a spare that you could use in place of your current one?

80 Celsius? That's like 179 Fahrenheit! Your computer's on fire

Download a program called "Smartfan"
It'll let you observe the temperatures and speeds of your fans, the CPU, GPU, etc.
If it's hot, above 65C, that's dangerous for a laptop. I'd look into buying a cooling platform/tray for 20-30 USD. It should drop it several degrees if you buy a nice big one.

As the others have said, it is most likely over-heating while in game, purchase a fan or if you don't have money for it at the moment put your laptop on a big book where the sides have room below them. This will help keep your laptop from over-heating. Also if you use your laptop on your bed that may cause a problem.

80c is normal temperature for a laptop underload, regardless of overlock
your laptop will not shut down due to heat untill around 100c ,

Did MSI kombuster show your overclock as stable? no artifacts
what did you change the clock speed to on your 310m and what driver are you using