Firstly, why did you try Windows 10 so soon and not wait ’til it’s got the first round of bugs ironed out? Have you learnt nothing …?
Anyway … on my laptop, I cured the flashing-desktop-can’t click-on-anything-issue by
Hold [SHIFT] button, then click on restart.
When restarting – take option 5 / F5 to start windows in Safe Mode.
Then run the Norton Uninstall Tool you’ve downloaded onto a USB stick on a different PC from here … Norton Uninstall Tool.
Download the Norton Uninstall Tool from the official Norton site – Norton Uninstall Tool
Restart normally, all should be well. You can now reload Norton – or revert back to Windows 7 for now!
7th Nov Update – Getting to grips with Windows 10 – and more importantly, performing a clean install – Dave Fry’s now on Windows 10. Click Here.