I think it was the first one. Pianodream.
Here's the words in red that you may have missed while posting.
"Please read before posting
If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended."
You could be using some older PC with a 486 with a XP that has no patches for all I know. The office has this guinea pig laptop which is this one -> http://www.cnet.com/laptops/asus-vivobook-x202e-dh31t/4505-3121_7-35530760.html
That's not a high end machine and the few games I tried didn't seem to stress this at all.
As it stands, it's either you as a newer user of Windows or your computer.
I worry that you are new to PCs as you seemed to struggle to find folders and files.