Satellite C850 - blue screen on start-up

Hi,
My elderly father has a Toshiba Satellite C850-1MC Laptop - (Intel Pentium B960 2.2GHz, 4GB RAM, 500GB HDD, 15.6" HD LED, DVDRW, Intel HD, Webcam, Bluetooth, Windows 8 64bit).
When he starts the laptop the initial screen appears for a short period then goes to a blue screen with only the mouse pointer showing (no error codes appear).
If when on the initial screen he quickly presses a button it will go to the welcome screen for a very short period and then go to the blue screen as above.
Anyone got any ideas how to sort?
Thanks in advance

Hi
Are you able to access the BIOS?
Power up the unit and press F2. This should allow you to access the BIOS.
In case this is possible, the notebook has passed the POST (power on self test) properly and this would mean that no serious hardware problems has been detected.
In case this isnt possible, I assume the hardware is affected. In this case you should start with the RAM module check.

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Satellite C850 - blue screen on start-up

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