Are you leaving the laptop power unit plugged into the laptop and switched on at the mains socket or just running the laptop from its battery when in sleep mode?
It could be that the battery is running down when in sleep mode.
This thread is now locked and can not be replied to.
Best Samsung Galaxy S7 deals: Where to buy Galaxy S7 & Galaxy S7 Edge
1995-2015: How technology has changed the world in 20 years
Learn UX design: 11 best paid and free UX design courses
The 135 best iPad & iPhone games: Truly wonderful games for iOS
Synology invites you to visit them at The Gadget Show on 31st March – 3rdApril. Book your tickets now and visit Synology at Stand K92