Windows 10 Login Problem and Task Manager

[Big_8_]

So yesterday I came back home and after browsing on my pc for a while, it shut down by itself and then it said repairing hard drive. After the update when I tried to log in it said this;
REACHitAgent.exe - Application Error

The exception unkown software exception (0xe0434352)
occurred in the application at location (0x00000000770A13802).

So I tried to go in safe mode and safe mode with networking but it did not allow me. It did not let me access task manager too. I could not do sfc /scannow in command prompt. Also, every time I did startup repair it would also stop.

So I got frustrated after trying everything I could and installed Windows 10 all over again.

Then I went into task manager. It showed the disk at 100 percent or close to it and the CPU was near the 60s. Then the disk went below 5 and a few seconds later to 20%. In safe mode everything was stable.

I decided to download malwarebytes. It found nothing. The command sfc /scannow found nothing.

Now I am wondering. What the neck is going on!? Please help.

 

[Colif]

top error is something to do with .net

How old is the installer you used? Where did you get Motherboard drivers from?

Try doing a clean boot and see if it helps: https://support.microsoft.com/en-au/help/929135/how-to-perform-a-clean-boot-in-windows - if it does, the problem is one of your start up programs, slowly add them back to find the cause.

Also have to take into account fresh installs will have a lot of updates to get of Windows Update and the app store.