For peeps with correct setting and ya can't put computer to sleep.. try this..
Examine power requests of installed softwares:
There are high chances that the installed softwares might be sending power requests to sleep mode as a result of which the system keeps active. In order, to get a status of the power requests, follow the steps:
Right-click the ‘Start’ button
Select ‘Command Prompt (Admin)’
enter this command ‘powercfg /requests’ in the opened window
The executed command will provide a list of all the running power requests. Theoretically, the listed categories should not include any data. If the categories are not empty, consider the software or softwares that are requesting power. These active power requests can be a reason for the system to fail from entering sleep mode..