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#61
To avoid upgrade issues see my thread here. For old systems that are prone to issues, one should DISCONNECT from the internet and uninstall the antivirus and any other protection and disk utilities. Then start the upgrade to Windows 10 but UNCHECK the box to search for updates during install. This, as well as being disconnected from the internet should ensure Windows Setup will not try to mess with drivers before a successful upgrade to Windows 10 is complete. Then reinstall all the drivers starting from the chipset. For recent Intel chipsets (socket 1156 and newer) all INF driver files are compatible to Windows 10, so just install latest version for the respective chipset. For socket 775 you must install Windows 8 or 7 driver is there is no 10 one, but IT WILL work OK in Windows 10. Please do not spread unnecessary panic! After installing the chipset proceed to install graphics and other drivers. Always the preferred version is the latest OEM Windows 10 version, but if there isn't any, Windows 8 and 7 or even Vista should also work OK. After making sure all your devices have updated drivers, it is safe to connect to the Internet and activate Windows. But to avoid Windows Update screwing your drivers, I recommend using the show/hide tool to exclude ALL driver updates before running the first Windows Update. This will make sure Windows Update will only install useful patches and won't screw your working drivers, even if these drivers might be as old as Vista or even XP. Yes, I have installed Windows 10 32-bit to a few old Vista era laptops with Vista drivers (no newer available) and they work FINE. So unless you have done it yourself and have your own experience, please DON'T SCARE OTHERS!
I hope this is crystal clear now. Upgrade is not a disaster, as you try to prove! And a clean-install should not be necessary if your previous Windows installation is not a mess and you do a proper upgrade. Period. I am a Computer Technician, so please let me be more experienced than the average user. I know exactly what I'm doing and suggesting. I have done it myself numerous times.