macbook pro periodically restarts

[kayzer]

I guess this started to happen after updating to 10.11.1. The last time I experienced restart is when I plugged my power adaptor as the battery was already low. My mac restarts and I get the white window saying that there was a problem and so on. The times before it was just while using Safari: the colours suddenly mixed up on the screen and mac restarted. Does anyone knows what can be a problem ?
I think there is a problem with the graphic card (see the image attached).


Model: MacBookPro4,1, BootROM MBP41.00C1.B03, 2 processors, Intel Core 2 Duo, 2.4 GHz, 4 GB, SMC 1.27f3
Graphics: NVIDIA GeForce 8600M GT, GeForce 8600M GT, PCIe, 256 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR2 SDRAM, 667 MHz, 0x2C00000000000000, 0x3136485446323536363448592D3636374531
Memory Module: BANK 1/DIMM1, 2 GB, DDR2 SDRAM, 667 MHz, 0x2C00000000000000, 0x3136485446323536363448592D3636374531
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8C), Broadcom BCM43xx 1.0 (5.10.131.36.16)
Bluetooth: Version 4.4.2f1 16391, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: INTEL SSDSC2CW240A3, 240.06 GB
Parallel ATA Device: HL-DT-ST DVDRW GSA-S10N
USB Device: USB 2.0 Bus
USB Device: Built-in iSight
USB Device: USB 2.0 Bus
USB Device: USB Bus
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
USB Device: USB Bus
USB Device: USB Bus
USB Device: USB Bus
USB Device: Apple Internal Keyboard / Trackpad
USB Device: IR Receiver
USB Device: USB Bus
Thunderbolt Bus: