Windows 10: C:\WINDOWS\system32\LogonUI.exe

My friend had made me a computer for gaming and such and i had it for years. then at the bottom of my screen it asked for a product key. I never put one in because i was told i didn't need to. Earlier today i restarted my computer after removing a game. when it turned back on it was a blank screen that said C:\WINDOWS\system32\LogonUI.exe it asked for me to sign in but it was also asking for a password. I haven't had a password on my computer in years. what do i do? i don't want to lose anything. the person who made the computer believes that windows was corrupted and that it needs to be reinstalled.

:)

 

CSRSS @ c/i386

Tried Nod32.. no help. Will try kaspersky. Will try Norton Corporate Edition Anti-Virus. thanks for suggestion.

 

SLI with different cards

Here is what is did
step 1:





step 2:





:/ i dont get this doe ?

okay ive done the same thing as you but i cant put the file back into the folder

• Copy nvlddmkm.sys in C:\Windows\System32\DriverStore\nv_dispi.inf_amd64_5518e59e8d3b48f4\ to C:\Windows\System32\drivers\ and replace the existing one.

that thing

 

Windows cannot find C:\WINDOWS\system32\rundll32.exe

Windows cannot find C:\WINDOWS\system32\rundll32.exe

Hi Can anyone help me, i am trying to open files and folders and all i keep getting is Windows cannot find C;\WINDOWS\system32\rundll32.exe, and so stopping me gaining access.

Especially when I launch my Windows 10.?