Originally Posted by Kargo:
“Hi Guys,
I have a quick question - one of my PCs isn't working correctly, its throwing up errors that Windows system files are missing. Having done numerous scans (Avira & Malwarebytes), the errors seem to be legit. System restore has also stopped working, having failing to restore to every point I attempt - even in safe mode.
This has led me to wanting to completely clean install Windows but I can no longer locate the original recovery disc and there appears to be no recovery partition on the hard drive.
My PC is eligable for the Windows 10 upgrade (as I've had the icon in my taskbar for the past month or so now) and I did reserve my copy. If I was to download and use the latest Insider Preview build of Windows 10, would it automatically get updated to the final release on 29th July or like Windows 8, will it expire itself and require me to buy a new license when it does get released?
Many Thanks in advance.”
Do not overwrite current os with windows 10 preview as you will lose evidence of a legit OS.
Better option is to download windows 10 iso and install on an external usb drive using win2usb (simple giogle search).
You will need to change bios to boot from usb first.
Thus creates a bootable external hard drive with windows 10 preview,and you can now use pc without deleting (broken) windows 7.
note: ms have backtracked on saying testers will get a free W10 licence. What they say now is testers can always have latest test version - each of which time expires of course. They say that is effectively a free licence.