After clicking finish to restart the computer after the factory reset, up came the screen to set my details on the fresh install, then the screen went mental colours again, and during the set up, I could barely make out anything that was written, as the normal size 10px font was now all different colours and covered with different screen colours, a bit like a captcha but 100 times harder to read, then the bastard screen turned black again and froze, so I had to hit the off button to shut the computer down during set up, think I was near or at the end of it, though.
I made some progress last night, I constantly restarted and clicked to load windows normally when offered that option, after countless restarts it eventually recognised that it had been reset to factory conditions.
It gave me the fingerprint login set up, after doing that it crashed again, but with each restart it would go longer before crashing and enabling me to get through the HP register your new computer section etc, each section continually crashed, but upon restart would let me get to the end of each registration section until finally I got to desktop and it loaded
But then it soon crashed again with all the weird colours and freezing, anyway, I called it a night at that point.
This morning I turned the laptop on, desktop loaded straight away, but crashed within a minute, so I turned the power cable off at the wall and forgot to turn it back on when I rebooted, then I noticed something, after desktop loaded, I then switched the power back on at the wall, and a white box appeared on the desktop asking if I wanted to change the ATI graphic stuff, options were change or cancel, I clicked change, and then it crashed again.
So, I went through the same startup again using only the laptop battery for the power, got back to desktop, switched the mains cable on, this time chose cancel when the white box appeared, the computer then performed normally from 8:00am until I just rebooted it a short while ago in order to restart my AVG anti virus.
I did the same as earlier, but clicked change when the white box appeared just as a test, upon which the computer crashed as I thought it would, restarted and clicked cancel and now working fine again, so at least I now know how to at least get the bugger to not crash, for now anyway