Hello;
Allow me to welcome you to the HP forums!
I read your post about low disk space and wanted to help.
I agree that 16GB of space is ridiculously low for a PC; in fact, HP is still selling PCs that come with only 32GB of disk!
One complication of the WinSxS folder is that those files are not really there, so you can't just remove them or the folder to recover the space. But there is a way to address it. See this Win8 community forums thread: WinSxS folder cleanup in Windows 8 & Windows 8.1
Good Luck
I am a volunteer and I do not work for, nor do I represent, HP.
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