Hi Emiliana,
Thank you for visiting Microsoft Community.
As I have understood, you are experiencing issue with there is no desktop, screen is black and a message: “Impossible to find the script
file “C:\Windows\run.vbs” on the system.
I certainly understand the concern.
I would suggest you to try the following steps and check if that helps.
Step 1:
To diagnose whether this issue occurs in
“Safe Mode”, let’s reboot the computer in safe mode and check if the issue appears there as well.
Safe mode is a diagnostic mode for Windows that starts your computer in a limited state. Only the basic files and drivers necessary to run Windows are started. This
helps us in identifying whether the issue is due to some third party programs conflict. The word Safe mode appear in the concern of your monitor to identify which windows mode you are using.
Follow the steps in the article below to start your computer in safe mode.
Windows Startup Settings (including safe mode).
http://windows.microsoft.com/en-us/windows-8/windows-startup-settings-safe-mode
Step 2:
If the issue does not appear in safe mode, place the computer in clean boot state and check if the issue reappears.
Placing your system in
“Clean Boot” state helps in identifying if any third party applications or startup items are causing the issue. You need to follow the steps from the article mentioned below to perform a Clean Boot.
**How to perform a clean boot in Windows**
https://support.microsoft.com/en-us/kb/929135?wa=wsignin1.0
If the issue does not occur in “Clean Boot”, then you may determine which application/service on the computer is causing this issue. This can be done by following the
instructions for “Windows 8.1 and Windows 8” given in the section
“How to determine what is causing the problem by performing a Clean Boot” from the same given link.
**Note:**Refer "How to reset the computer to start normally after clean boot troubleshooting" to reset the computer to start as normal after troubleshooting.
I hope this information is helpful.
Please do let us know if you need any further assistance, we will be glad to assist you.
Thank you.