Parece que seu sistema pode estar entrando no modo de hibernação em vez de em hibernação verdadeira. A Microsoft diz :
Hybrid sleep is designed primarily for desktop computers. Hybrid sleep is a combination of sleep and hibernate—it puts any open documents and programs in memory and on your hard disk, and then puts your computer into a low-power state so that you can quickly resume your work. That way, if a power failure occurs, Windows can restore your work from your hard disk. When hybrid sleep is turned on, putting your computer into sleep automatically puts your computer into hybrid sleep. Hybrid sleep is typically turned on by default on desktop computers.
Desative a suspensão híbrida executando este comando em uma janela do Prompt de Comando:
powercfg /setacvalueindex 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c 238c9fa8-0aad-41ed-83f4-97be242c8f20 94ac6d29-73ce-41a6-809f-6363ba21b47e 0
Ativar o modo de espera híbrido alterando o 0
no final para 1
e executando novamente.