jammybstard :
I'm not to familiar with Intel integrated graphics but if that HD 5500 GPU is integrated into a CPU then it might well share RAM as the AMD APU's do. I know that with my 7850K you can specify how much of the RAM is shared. up to 2Gig.
http://www.notebookcheck.net/Intel-HD-Graphics-5500.125586.0.html
I don't think I can help you much but perhaps posting your full system specs will help.
here are some of my specs
Intel(R) Core(TM) i3-5020U CPU @ 2.20GHz
Manufacturer Intel
Speed 2.2 GHz
Number of Cores 2
CPU ID BFEBFBFF000306D4
Family 06
Model 3D
Stepping 4
Revision
Video Card Intel(R) HD Graphics 5500
Manufacturer Intel
Chipset Intel(R) HD Graphics 5500
Dedicated Memory 128.0 MB
Total Memory 2.1 GB
Pixel Shader Version 5.0
Vertex Shader Version 5.0
Hardware T & L Yes
Vendor ID 8086
Device ID 1616
Plug and Play ID VEN_8086&DEV_1616&SUBSYS_19AD1043&REV_09
Driver Version 10.18.15.4268
Memory 4.0 GB
Operating System Microsoft Windows 10 (build 10240), 64-bit
Service Pack 0
Size 64 Bit