I reformatted my hard drive too but am still having the same problem. I think there's too many of us experiencing this for it to be a virus or malware issue.
Humm, this is rather disturbing news. That leads me believe that my problem was fixed by either sheer luck or something else that didn't occur to me. Assuming your system is up to date, the question is how did you reinstall the windows, clean installation or upgrade from a previous version? Although this may mean nothing, it was my case for reformatted it and reinstated as a clean installation rather than an upgrade over the older version. In case if your machine requires an upgrade rather than a clean install due to drivers integrated into the installation/restoration disc, there is however a way around that. You could still install a clean version, then download the drivers for each component individually from their respective websites or the manufacturer's website and install them independently. Of course this theory may not be your case at all, however it's good to throw out there in case it happens to be someone else's situation. I wish I could pin point the resolution of my success, but reformatting and reinstalling a clean copy of windows 10 fixed the problem. Of course I did download drivers for my Fujitsu T935 individually, but still I ended up not using the drivers are suggested by Fujitsu, but rather after the reinstallation of the windows, I only did an update, and windows update found all thrives and installed them in a respective orders. Not a single problem again. So in other words, even after instilling the Fujitsu drivers from Fujitsu website, I still had problems, different problems, not the retracting folder view, but some of the components wouldn't work the way expected. So I disregarded the Fujitsu drivers and only updated the windows through windows update. Then when I opened device manager to see if any of the drivers are still missing, there was only one driver with questions mark, then I click on the update the driver for that particular component using online update. It didn't find the update online. So I put in the drivers disc that I've downloaded from Fujitsu website particularly for that machine, and directed the update source to the disc and installed only that single driver from the disc. Then everything operates like a Swiss clock.
Another thing I would suggest is the installation of the drivers to be installed individually from device manager individually than all together using the manufacturer's installation process. There are possibilities (at least in my case) when one driver is installed and requires a restart, then another driver starts installing by the installer application, then this could also create a conflicting problem. It's better to install each driver individually then restart for each driver if it's prompted to do so. The systematic procedures I would suggest as follows: 1) formatting the hard drive (during the installation process, select each drive assigned by letters and delete them all, until you have only one drive left, then format that drive. If you choose only C: driver and format only that drive, then the system folders are still intact so upon restoration of OS most likely the problem will still be there, if the problem happens to be associated with a system file), 2) install a clean copy of windows, 3) without first trying to install the device drivers try to update the windows first. If you cannot connect to an internet, then open the device manager and click on the wifi/internet/network controller device and select update the driver using the drivers' disc or whatever source you have. After a successful update of the Ethernet/network controller, try to connect to the internet then go to windows updates to update the windows first before you install any other drivers) 4) after windows update check the device manager to see if any drivers have question mark on it. If does then click on the drive and select update the driver then navigate to the source from which to install the driver DVD or flash drive. After updating those drivers successfully then check the device manager again to see if everything looking good. If does look good, then launch windows update again to bring all those individually installed drivers up to date. 5) install any component's programs using the disc came with the machine. Those programs usually are DVD burner, mouse properties, display properties, and other components properties. These programs/property tools are different from the components drivers. While a component's driver is designed to be recognized by the machine, the component property tools or programs are designed to operate that component. They all might or might not be on the same restoration disc. If you have an integrated restoration disc you might not be able to install individual driver/program from restoration disc, but you can download individually from the manufacturer's website. I hope this will be helpful, if not specifically for you it might help someone else. Good luck.