According to this [https://www.lifewire.com/how-to-fix-wlanapi-dll-not-found-or-missing-errors-2624238 article], adding a featured called Wireless LAN service may fix the problem.
In addition, the computer cannot find the GPU when we type 'dxdiag' in the cmd prompt. This may be a driver-related issue and this [http://www.bsocialshine.com/2016/06/how-to-fix-all-dll-file-missing-error.html article] suggests that installing 'Directx end user runtime web installer' will fix the problem.