Web Page opening on its own

No that is not installed

It looks as if you did a File > Save as... to save the file.
I'm not sure if that changed things or not.

Use Windows (file) Explorer to see if the file is still on your Temporary Internet Files folded.

If you see the file (named web.html), then please copy it to your desktop, compress it and upload it.

Using explorer and in the Temporary Internet Files folder there is no web.html

It might only be there when the browser is showing the file.

The Temporary Internet Files folder is sort of not real.
It shows you some files from other hidden folders.
C:\Users\username\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\3FNW74A1
C:\Users\username\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\AKU5RBRS
The last part of the path varies.

It is probably not worth finding the actual file... I was just curious.

Process Monitor can probably find it. But if you are not familiar with the tool, it will be hard for me to document how to use it to find the app that creates this file.

Download the zipped (compressed) file
Open the zipped (compressed) file (folder)
Copy the files somewhere
Run the exe
Agree to the EULA

When it starts for the first time, it automatically starts gathering data. Let me know if you want to learn how to filter what it finds. Unfortunately, It will need to run and gather data all of the time until the donate popup occurs.

Thanks again

It does not seem to be affecting the PC as I said at the start it is just an annoyance, would it hurt to delete the contents in the Temporary Internet Files folder ? at the moment there are 4,818 items in there

It will not hurt to clear those temp files out, but I would suggest letting CCleaner do it for you. The temp files are sprinkled in various places on your hard drive(s).

Or you can use W7's native Disk Cleanup:
Disk Cleanup - Open and Use

I think I may have sorted it, using Process Monitor found out it was being generated from an exe called Run Time which was
in the Startup Folder.

I killed the process, then deleted the exe from the Folder.

Then rebooted, hopefully that will stop it

Once again thanks for all your help I will mark this as solved.

Good to hear

Had this problem.
The things I did.
1st download Rogue Killer. Run and get shut of pup files.
then download malware bytes, Run and get shut of pup file.
Then lastly download bitdefender, 30 day trial
Run complete scan this will delete malware byte and hunt out most virus's.
when everything complete restart machine. Maybe a slow process depends on machine you have.
Everything works great now cpu usage below 10% no rogue internet pages opening with sound coming over speakers.
By the way I was running AVG before. Deleted it before I started. Now running bitdefender.
Win 7 64 bit.