# Disable CompatTelRunner.exe which consumes a lot of I/O and CPU

From [https://superuser.com/questions/944067/windows-disk-i-o-100-at-boot-for-20-minutes](https://superuser.com/questions/944067/windows-disk-i-o-100-at-boot-for-20-minutes)

The exe is here:
`C:\Windows\System32\CompatTelRunner.exe`

Go to: 
> Computer Management – System Tools – Task Schedule Library – Microsoft – Windows – Application Experience  
or  
Start – Run – taskschd.msc  
Name: Microsoft Compatibility Appraiser  
Location: \\Microsoft\\Windows\\Application Experience  
Collects program telemetry information if opted-in to the Microsoft Customer Experience Improvement Program.  
**→ Disable**