Hello itzikamar,
I understand that you are having problems resuming from sleep mode.
From the motherboard side I can recommend you to update the BIOS and load the BIOS defaults. Remove any non essential component as these may prevent the sleep states to work properly.
Please note that the sleep requires that every device connected supports them. A power supply, video card, hard drive, etc not working properly can cause this behavior.
Regards.
PV