Kernel Input Data Error

Hi,
This is my first post on a forum like this so please be gentle ;)
I have an acer aspire S3 with Windows 8. Its about 3 months old and I've used it with NO problems until last night when the Kernel Data Error occurred and my computer restarted itself. Since last night this error has occurred 3 times in 12 hours.
Whats changed in the last 3 months?
1. The McAfee security trial has ended in the last 2 weeks.
2. 5 days ago I relocated to Russia ( I bought the laptop in the UK -my home country)

Windows 8 came with the computer, the only things I have installed within the first 2 months were Microsoft Office, and a CD that came with my panasonic digital camera, which I am presuming is safe and OK.

The error message occurs when I am streaming either a youtube video, or this weeks episode of breaking bad etc.
I do have a large amount of photos on the computer which I will transfer to my portable hard drive today to see if freeing space could be the problem.

I am a kindergarten/1st grade teacher and have to use my computer for teaching and REALLY dont want this happening next week when I get to school.

Any help would be greatly appreciated!

Regards

Forum Noob