Hi guys
Wow - lots to think about from all your responses & thanks for jumping in to help.
On the Virus concept, the laptop's brand new & came with McAfee which I updated immediately, and it says the PC is secure & scans show no viruses etc, so maybe nothing from that source. There's nothing additional in my Start Folder other than the Admin tiles & the 2 programs I've installed (Firefox & BatteryBar).
The copy of Win 8 was a full copy which came with the machine and I had to then fully install it at the first startup, so can't see it being a problem copy.
Finally - yes, my stupidity maybe was in not just doing a fresh copy of Firefox but I was trying to have it in a similar state to the copy on my desktop hence using MozBackup to get the extensions etc added in quicker. I have since managed to get a fresh copy finally installed so that problem's solved, but not the Win8 one which seems to go from bad to worse. I'm now having problems getting File Explorer to open - wouldn't do so from the taskbar - I had to create a new folder on the desktop & then use that to get it to open up.
SO part of me is at a point where I think I might just reset the whole thing anyway, since there's nothing on it yet of any major value but if I can hold off on that I'd be happy as I've no idea whether I can indeed get the OS reinstalled given I've no discs or keys etc to use.
Thanks again BK.
Just a little note on McAfee as well - It isn't the greatest at all. It's probably more of a deadweight than an asset to computer security for you. It's not regarded as a great program period, however MalwareBytes on the other hand is one of those programs that has become fairly reputable out there as a scanner. For real time protection, I haven't had any issues with MSE, or in this case if you are running Windows 8, "Windows Defender". Even if there were viruses on your PC, I can't guarantee that McAfee would find a fraction of them if any.
Finally - yes, my stupidity maybe was in not just doing a fresh copy of Firefox but I was trying to have it in a similar state to the copy on my desktop hence using MozBackup to get the extensions etc added in quicker.
Perhaps you learned a valuable lesson then?
My notes on that, don't ever do that with programs. As a developer, i'm specifically aware to how programs and processes are created and terminated on your system, and even for configurations, there's other parts that you'd probably miss along the way within Registry values and isolated storage locations anyways, among a variety of other things to add to the list of why this is a horrible idea. And I wouldn't recommend porting a copy of the registry over just to make this work either. That's even farther down the hole of stupidity lol.
Not to say that you are stupid though, as you haven't done that, but I was once left in the shadows with this kind of information too. Admittedly, I also at one point long ago thought the question for why I couldn't just move all my programs over to a new installation, so don't feel so bad.
As File Explorer, you mean an instance of "explorer.exe"? Have you ran system file checker yet to check the integrity of such valuable windows files as this?
If you don't want to run the full check, you can scan just that particular file with the scanfile flag.
Open up command prompt and type in "sfc /?" (without quotes) to see what your options are.
And lastly, don't pull out too much hair from all this grief
There's always a solution to the problem, that's the way I look at it.
Cheers
~Ace