Answer

Please enter BIOS and follow the below steps to set suto boot function:
Settings-->Advanced-Wake up Event Setup-->Resume By RTC Alarm set to "Enabled"
After Enable this item will show up the below items:
Date(of month)Alarm: Setting month
Time(hh)Alarm: S

Models

760GM-E51, 760GM-P35, 785GM-E51, 785GTM-E45, A55M-P25, A55M-P35, B75A-G41, B85M GAMING, CSM-Q87M-E43, H67MA-E35 (B3), H97 PC Mate, Z68A-GD65 (B3), Z87I GAMING AC, Z87M GAMING, Z97 MPOWER MAX AC, ZH77A-G41, 760GM-P33, 880GM-E43, 880GMS-E35, A88X-G45 GAMING, FM2-A75MA-E35, H61M-P32/W8, H87M-G43, Z77IA-E51, 880GMA-E41, A58M-E35, H61M-P20 (G3), H81M-E33 V2, K9A2VM-F V2, P67A-C45, P67A-C45 (B3), Z97-G43, A88XI AC, Big Bang-Marshal (B3), H61M-P35 (G3), H97 GAMING 3, X79A-GD45, X79MA-GD45, Z68A-GD80 (B3), Z97M GAMING, 740GTM-P21, 760GMA-P34 (FX), 990XA-GD55, KA780VM-D, X99S GAMING 9 AC, Z87 MPOWER MAX AC, Z97 GUARD-PRO, 880GMA-E55, B75A-G43, B85M-P33 V2, H61M-P31 (G3), H87-G43 GAMING, H97 GUARD-PRO, P67A-GD55 (B3), PH67A-C43 (B3), Z87-G41 PC Mate, Z97I GAMING AC, 760GA-P43 (FX), 880GMA-E53, 970A-G46, A55-G45, B75A-G43 GAMING, B75MA-E31, H81M-P32, 880GMA-E35, B85I GAMING, Big Bang-XPower II, H97M-G43, Z68S-G43 (G3), Z77A-G43 GAMING, 740GTM-P25, 970 GAMING, A55M-E33, H61I-E35/W8, H67MS-E33 (B3), H81M-P32L, H97M-E35, P67A-GD65 (B3), Z68A-GD80 (G3), Z77A-G45 Thunderbolt, 880GMA-E45, H61M-E33 (G3), H67MA-E45, H67MA-ED55, H81-P35, Z68A-GD55 (B3), Z87 MPOWER MAX, Z97-G43 GAMING, 740GTM-P25 v1.5, 880GMS-E35 (FX), A88X-G43, H61M-E22 (G3), H67A-G43 (B3), H87I AC, P67S-C43, Z97-GD65 GAMING, A88XM GAMING, FM2-A75MA-P33, FM2-A85XA-G65, K9A2GM V2, P67A-GD65, Z68MA-ED55 (B3), Z77A-G43, Z87M-G43, A78M-E45, H61M-E23 (B3), H61M-G35 (G3), H67MA-E45 (B3), H81I, H81M-E35 V2, Z87 MPOWER, A55M-P33, H61M-P35 (B3), H67MS-E43, H97I AC, P67S-C43 (B3), Z77A-GD80, Z87 XPOWER, Z87-GD65 GAMING, 760GM-P23 (FX), 880GM-E41, B75MA-P33, H61M-P31/W8, P67A-GD80 (B3), PH61A-P35 (B3), 760GTM-P33, 970A-G43, A55-G35, A88X-G45 GAMING Assassin’s Creed Liberation HD, A88XM-P33, B85I, B85M-E33 V2, B85M-E43 DASH, FM2-A55-G43, FM2-A85XMA-E35, H61M-E33/W8, H87M-E35, X99S MPOWER, X99S SLI PLUS, Z77 MPOWER, Z77A-G45 GAMING, Z97 U3 PLUS, 760GM-E51 (FX), 880GMA-E35 (FX), 990FXA-GD65, A78-G41 PC Mate, B75MA-P45, FM2-A55M-E33, H81M-E32, P67A-GD53, Z68A-G45 (G3), Z68MA-G43 (G3), Z68MA-G45 (G3), Z87-G43, 785GM-E65, A78M-E35, FM2-A85XA- G65, H61M-P22 (B3), H61M-P23 (G3), H97M ECO, PH67S-C43 (B3), Z68A-GD55 (G3), Z97 PC Mate, 760GM-P34 (FX), 760G-P43 (FX), A75A-G35, B85M-E33, H61M-E33 (B3), H61M-P21 (B3), H67MS-E23 (B3), H87M-E33, X79A-GD65, X99S XPOWER AC, Z77MA-G45, 740GM-P21, 880GMS-E41 (FX), B85M-P32, B85M-P33, H81M-P33 V2, P67A-G45 (B3), Z87-G43 GAMING, Z97-G55 SLI, 890FXA-GD70, B75MA-E33, FM2-A75IA-E53, H61M-P20/W8, H61M-P33 (B3), P67A-GD53 (B3), Z68A-G43 (B3), Z87 MPOWER SP, Z87-G55, Z97 MPOWER, 880GM-P51, 990FXA-GD80, B75A-E33, FM2-A55M-P33, H61I-E35 V2/W8, H81M ECO, A58-G41 PC Mate, A75A-G55, A88XM-E35, H61M-E23 (G3), KA780GM2, X79A-GD45 (8D), X99S GAMING 7, Z77A-G45, Z97S SLI Krait Edition, 740GM-P25, 740GTM-P23, A88X-G41 PC Mate, B85M-G43, FM2-A55M-P31, H61M-E22/W8, H61M-P23 (B3), H67MA-E35, H81M-E34, H81TI, P67A-GD55, Z77A-GD55, Z87I, ZH77A-G43, 880GM-E35, A75MA-G55, B75MA-G43, B85-G41 PC Mate, B85M-E45, H61M-P25 (B3), H67MS-E33, H77MA-G43, H81M-E35, Z68MA-G45 (B3), Z97 GAMING 9 AC, A55-G41 PC Mate, A58M-E33, B85-G43, B85-G43 GAMING, FM2-A75MA-P31, H81M-P33, PH61-P33 (B3), X79A-GD45 Plus, Z97 GAMING 5, 890FXA-GD65, A55M-E35, X79A-GD65 (8D), Z68A-G43 (G3), Z68A-GD65 (G3), Z77A-G41 Plus, Z77A-GD65, Z97S SLI PLUS, 970A-G45, A75MA-P35, FM2-A55M-E35, FM2-A85XA-G43, H61M-P22 (G3), H67MA-ED55 (B3), H81-P33, K9A2GM V3, P67A-G43 (B3), Z77A-G41, Z97 GAMING 3, Z97I AC, 860GM-P43 (FX), A88XM-E45, H61I-E35 (B3), H87-G41 PC Mate, H87I, P67A-C43, Z77A-GD65 GAMING, Z87-G45 GAMING, Z97 GAMING 7, Z97-G45 GAMING, H61MA-E35 (B3), H61MU-E35 (B3), H81M-E33, H87M-P32, KA780VM, P67A-C43 (B3), Z68A-G45 (B3), Z87I AC, 880GMS-E41, FM2-A85XMA-P33, 760GM-P21 (FX), 785GM-P45, B75IA-E33, B85M ECO, H61M-P25 (G3), H67MS-E43 (B3), H87-G43, H87M-P33, Z77IA-E53, Z97 XPOWER AC, Z97M-G43