My laptop won't go into sleep mode, it only shuts down

Tech Support Guy System Info Utility version 1.0.0.9
OS Version: Microsoft Windows 8.1, 64 bit, Build 9600, Installed 20150618004735.000000+060
Processor: Intel(R) Core(TM) i3-4005U CPU @ 1.70GHz, Intel64 Family 6 Model 69 Stepping 1, CPU Count: 4
Total Physical RAM: 4 GB
Graphics Card: Intel(R) HD Graphics Family, 2041 MB
Hard Drives: C: 913 GB (790 GB Free);
Motherboard: Acer EA50_HB, ver V1.26, s/n NBV9M11001506005483400
System: Insyde Corp., ver ACRSYS - 1, s/n NXMR7EK020506091A43400
Antivirus: Norton 360, Enabled and Updated

I have checked all my settings are set to sleep where necessary, I tried updating all my drives but it still shuts down and when the battery dies I lose all my progress. I'm not sure what else to do.