I used the command CHKDSK /R .... is that just reading or is it reading and fixing?

It reads and fixes and has several stages it needs to run.

Right, the CHKDSK has completed and something came up on the screen about CHKDSK and detected and fixed one or more errors .... but before I could read the whole message the laptop shut off LOL

It seems to have booted up successfully but before I did CHKDSK I did this:-

Option 2 (Using backups from System Restore feature): From the Recovery Console, navigate to the folder \System Volume Information\ folderof the root drive, using the command:
cd "C:\System Volume Information"

Here, locate and navigate to the folder whose name begins with _restore using the command:
cd _resto~1

This folder contains many subfolders which have names of the form RPxxx, where xxx is a number indicating the restore point. Locate an RPxxx folder which has the highest number as its suffix (highest xxx) using the command dir command. Then navigate into that folder using the command:
cd RPxxx (don't forget to replace xxx with the corresponding number!)

Now, there will be a folder named snapshot. Navigate to this folder using the command:
cd snapshot

There should be a file named _REGISTRY_MACHINE_SYSTEM, copy this file to the \Windows\System32\Config folder with the name System using the command:
copy _REGISTRY_MACHINE_SYSTEM C:\Windows\System32\Config\System

Reboot the system and check whether Windows loads properly.
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Now, this didn't work previously but when it booted up successfully a message came up about me performing the above task.

Will the laptop be ok now? because I'm not sure what Option 2 actually did LOL

Could I possibly do a system restore to a previous point to make doubly sure?

So is the PC starting up as it should at the moment?

Just speculation at this point, but the corruption could have been caused by the laptop shutting down (if the disk was being accessed at the time). You most serious problem at the moment is that your laptop is shutting down. Does it shut down completely, do you have to turn hold in the power button for a few seconds before turning the laptop on as normal, does it restart, or do you just power the laptop back on as normal?

When it shuts off we just power up again by pressing and holding down the power button and it comes back on ok.

It has been fine ever since we've been using the laptop fan to keep it cool ... it was just today when I was trying to sort this problem out but seems to be ok now. Maybe the problem was causing it to shut off, I don't know.

I would like to thank all that helped me out and found a solution. It was much appreciated

OK, so you don't have to hold the power in for it to knock off completely, and then press it again for it to power up. This would indicate that the laptop has shut down completely.

But this problem wouldn't cause it to shut down, this is hardware. If your laptop has a has a history of overheating, might be worth using Speedfan to check your temperatures: Download SpeedFan - Access temperature sensor in your computer