Can't wake from black screen

[Black_Ace]

Sometimes i cant wake my computer from a black screen when it's been idle for a while? How should i fix this?

 

[Chicano]

The Windows Power Options > Power Plans have a Hybrid Sleep as part of the Sleep mode options.... disable it.

Control Panel > Power Options > Power Plan being used > click Change Plan Settings > Click Advanced Power Settings > in the Plan Settings Windows, click a) Sleep: > "Allow Hybrid Sleep" > Settings > OFF = to disable this option.
b) Sleep: > "Hybernate After" > Settings > Never = to disable this option.

These settings, when Hybrid sleep is enabled even if Hybernation is disabled, can make Sleep mode go to Hybernation and cause the issue you are having. Disabling both these settings keeps Sleep Mode in Sleep, never going into hybernation.