Already rest everything to default in the BIOS, didn't change a thing, sadly :(

I'll do that tonight when I go home. I'm using a pc in work at the moment, and once I go home, I wont have internet access until tomorrow. Unless I fix my pc tonight.
If that doesn't work, do you...

I took the old one out and completely switched it for the new.

If the old hard drive was causing software issues, I wanted to get it as far away from my machine as possible, to verify the...

No you're right, I do have that issue. It wont boot from the disk.

Windows installs on the hard drive though, correct?
If it was a windows issue, I'd assume you'd fix it by formatting and...

Feel free to correct me if I'm wrong, I'm only an amateur learning the ropes, trying to get my head around the issue

Well as I swapped my old hard drive for a brand new, blank one last night, and I still got the same issues, wouldn't that remove the possibility of the hard drive being faulty or software issues?

Before I begin, I can't post the dm logs as per the instructions, as I can't boot my pc to windows.

So, about 2 weeks ago, my pc began to experience some lag spikes in windows itself. It would...