how often you re instal windows 10 ?

I only reinstall win 10 if I have no other choice. Its pretty stable and most of the problems I find are caused by other programs or hardware.

So far, 8 months, one reinstall that I now see wasn't necessary as the problem was my speakers.

I have almost everything on a 2nd drive so even if i fresh install win 10 I only lose the applications on the drive with windows. Steam folder can be reused on a new install, or so I have heard.
 
I've not reinstalled anything for more than 5 years, went from socket 775 on two different processors, did sysprep to get win7 to a new platform, been stable with that for 4 years, and did an place update from 7 to 10. No issues.

But as above I have a small OS hdd and everything else is on other drives.
 
Other:
I also have Acronis True Image installed which does automatic, weekly updates. It even deletes older updates.

I even have my "Documents" folder backed up daily to another drive (only the changes). I use SyncbackSE Free for that. So there's several options that exist:

1) Jump back to an earlier RESTORE POINT (System Restore) which will tell you what programs will be affected (write down so you can reinstall). Data is not deleted.

If not certain, go to System Restore and make sure C-drive is setup (say 5% or more drive space allocated).

*System Restore has helped me about FOUR times in the last year. Once for example the Start Menu and taskbar had issues.

2) virus scanning and fix, like MalwareBytes.

3) Restore earlier backup IMAGE (i.e. if drive won't boot, can test in another machine... if it's not accessible you can then->
a) buy new drive
b) boot to Acronis TI boot disc (must have one made)
c) restore the backup image (i.e. store on HDD and write to new SSD)
d) return drive under RMA if applicable

4) Repair Install as mentioned above ("reinstalls" W10 basically replacing the guts of Windows)

Other diagnostics:
- Memtest86 www.memtest86.com
- Intel CPU https://downloadcenter.intel.com/download/19792/Intel-Processor-Diagnostic-Tool
 
I almost never reinstall. If you maintain your system properly and make regular full system backups, you shouldn't have to except in extremely rare conditions. I have two test desktops on the Windows 10 insider program that I've had to reinstall a few times last year, but not even those versions have had to be reinstalled in the last 6-8 months. If you're having to reinstall often, you're doing something wrong.
 


My system still crashes every 2nd day or so. I've never solved the problem, however I do know it's a Windows 10 issue since the system was stable for THREE years then crashed ever since I got Windows 10.

I've also swapped out my GPU (used iGPU), PSU, system memory as I had another PC to switch with just to be sure but it pretty much seems to be some driver issue. Memtest86 etc for diagnostics.

(Also ran Linux for four days but I can go up to a week with no crashing so it's really hard to troubleshoot)

I do use "BlueScreenView" which usually shows a ntoskrnl.exe crash.

I have reinstalled Windows 10 completely but it didn't help. I'm not the only one with issues, though hopefully it just goes away. It's not a huge deal and never happens when gaming. It can happen right after bootup when I've done nothing so it's otherwise pretty random.

Sigh.