¿Qué le pasa a mi portátil?

Hola tengo un portátil Samsumg R519, el problema que tengo que cuando juego a juegos del Facebook lo que sea, me consume el 100% de la CPU, lo que me conlleva que cuando llevo 30min jugando el ordena se me apague, no exactamente el ordenador si no que la pantalla se me pone en negro pero el ordenador está encendido con las luces como siempre. El ratón se ve pero la pantalla como digo en negro. (supongo que de la temperatura se apaga por seguridad)
Tengo que apagarlo del botón y para encenderlo de nuevo o no lo hace, o tarda un montón apareciendome la ventana de iniciar windows normalmente...o llega al punto que ni hace nada que tengo que retirar las memorias RAMS y ponerlas de nuevo para que arranque.
He probado de todo...desde eliminar virus con Malware, limpieza con CCleaner, instalar otro antivirus, probar con diferentes navegadores, limpiar las ranuras de las memorias RAM, eliminar Toolbars, he realizado un recovery con la primera instalación pero la GPU sigue calentándose un montón...

¿Qué puede estar fallando? Os paso datos del equipo:

Muchisimas gracias de antemano...

Ordenador:
Sistema operativo Windows 7 Home Premium Home Edition
Service Pack del Sistema Operativo -
DirectX 4.09.00.0904 (DirectX 9.0c)
Nombre del sistema AROA-PC
Nombre de usuario Aroa
Placa base:
Tipo de procesador Intel Pentium III Xeon, 2100 MHz (4.5 x 467)
Nombre de la Placa Base Desconocido
Chipset de la Placa Base Desconocido
Memoria del Sistema 3036 MB
Tipo de BIOS Phoenix (09/17/09)
Monitor:
Tarjeta gráfica GeForce G105M
Tarjeta gráfica GeForce G105M
Monitor Monitor PnP genérico [NoDB]
Multimedia:
Tarjeta de sonido Speakers (Realtek High Definiti
Almacenamiento:
Controlador IDE Intel(R) ICH9M-E/M SATA AHCI Controller
Disco duro SAMSUNG HM320II (298 GB, IDE)
Lector óptico TSSTcorp CDDVDW TS-L633C
Estado de los discos duros SMART OK
Particiones:
C: (NTFS) 144889 MB (126443 MB libre)
D: (NTFS) 144892 MB (134726 MB libre)
Tamaño total 283.0 GB (255.0 GB libre)
Dispositivos de entrada:
Teclado Teclado PS/2 estándar
Ratón Synaptics PS/2 Port Pointing Device
Red:
Tarjeta de Red Atheros AR9285 Wireless Network Adapter (192.168.1.13)
Tarjeta de Red Realtek PCIe FE Family Controller
Dispositivos:
Impresora Fax
Impresora Microsoft XPS Document Writer
Dispositivos USB Dispositivo compuesto USB
Dispositivos USB WebCam SCB-0320N
Batería Adaptador de CA de Microsoft
Batería Batería compuesta de Microsoft
Batería Batería con método de control compatible con ACPI de Microsoft
--------[ Debug - PCI ]-------------------------------------------------------------------------------------------------
B00 D00 F00: Controladora de procesador del chipset Mobile Intel(R) 4 Series a DRAM - 2A40 [NoDB]
Offset 00: 86 80 40 2A 06 01 90 20 07 00 00 06 00 00 00 00
Offset 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 20: 00 00 00 00 00 00 00 00 00 00 00 00 4D 14 59 C0
Offset 30: 00 00 00 00 E0 00 00 00 00 00 00 00 00 00 00 00
Offset 40: 01 90 D1 FE 00 00 00 00 01 00 D1 FE 00 00 00 00
Offset 50: 00 00 02 00 03 00 00 00 00 00 00 00 00 00 00 00
Offset 60: 01 00 00 E0 00 00 00 00 01 80 D1 FE 00 00 00 00
Offset 70: 00 00 00 00 00 00 00 00 01 04 00 00 00 00 00 00
Offset 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 90: 10 11 11 01 30 13 11 00 40 00 4F 00 00 1A 3B 00
Offset A0: 20 00 00 14 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 C0 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 00 00 00 00 00 00 00 00 00 02 00 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 00 00 00 00 90 02 00 00
Offset E0: 09 00 0A 11 86 7C 40 1E 01 90 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 00 00 A0 0F 07 00 00 00 00 00
B00 D01 F00: Puerto raíz PCI Express del chipset Mobile Intel(R) 4 Series - 2A41 [NoDB]
Offset 00: 86 80 41 2A 07 00 10 00 07 00 04 06 10 00 01 00
Offset 10: 00 00 00 00 00 00 00 00 00 01 01 00 20 20 00 00
Offset 20: 00 CC E0 CD 01 CE F1 DF 00 00 00 00 00 00 00 00
Offset 30: 00 00 00 00 88 00 00 00 00 00 00 00 10 01 1A 00
Offset 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02
Offset 80: 01 90 03 C8 00 00 00 00 0D 80 00 00 4D 14 59 C0
Offset 90: 05 A0 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 10 00 41 01 00 80 00 00 00 00 00 00 01 2D 01 02
Offset B0: 43 00 01 11 C0 25 0C 00 C0 01 48 00 00 00 00 00
Offset C0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 01 03 04 00 00 A0 A0 0F 07 00 13 40 00 00
B00 D1A F00: Controlador de host universal USB de la familia Intel(R) ICH9 - 2937 [NoDB]
Offset 00: 86 80 37 29 05 00 90 02 03 00 03 0C 00 00 80 00
Offset 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 20: 01 18 00 00 00 00 00 00 00 00 00 00 4D 14 59 C0
Offset 30: 00 00 00 00 50 00 00 00 00 00 00 00 10 01 00 00
Offset 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 50: 13 00 06 03 00 00 00 00 00 00 00 00 00 00 00 00
Offset 60: 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 00 2F 00 00 00 00 00 00 00 00 01 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 00 00 86 0F 04 00 00 00 00 00
B00 D1A F01: Controlador de host universal USB de la familia Intel(R) ICH9 - 2938 [NoDB]
Offset 00: 86 80 38 29 05 00 90 02 03 00 03 0C 00 00 00 00
Offset 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 20: 21 18 00 00 00 00 00 00 00 00 00 00 4D 14 59 C0
Offset 30: 00 00 00 00 50 00 00 00 00 00 00 00 15 02 00 00
Offset 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 50: 13 00 06 03 00 00 00 00 00 00 00 00 00 00 00 00
Offset 60: 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset C0: 00 2F 00 00 00 00 00 00 00 00 01 00 00 00 00 00
Offset D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset F0: 00 00 00 00 00 00 00 00 86 0F 04 00 00 00 00 00
B00 D1A F02: Controlador de host universal USB de la familia Intel(R) ICH9 - 2939 [NoDB]
Offset 00: 86 80 39 29 05 00 90 02 03 00 03 0C 00 00 00 00
Offset 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Offset 20: 41 18 00 00 00 00 00 00 00 00 00 00 4D 14 59 C0
Offset 30: 00 00 00 00 50 00 00 00 00 00 00 00 13 03 00 00
Offset 40: 00 00 00 00 00 00 00 00...