Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Reviews indicate both Windows 8 and 8.1!  Which does this system have?
Document: Very good computer for the Love everything about it, except for Windows 8. Still getting used to it, so maybe I'll change my opinion on the operating system in the future.
I'm completely satisfied with my new Pavilion. The complete process of purchasing, set-up, and becoming familiar with it went very smoothly. The only minor adjustment was becoming familiar with Windows 8.1, however that did not take very long. I would recommend it to anyone considering a new laptop.
I switched from desktop Windows 7 to laptop 8.1 and it was a learning curve. I am a senior citizen and not so savvy as younger people. I did have to call HP for help as it seemed I needed a lot of updating and changing of setup (done online) and it worked much better. I really like touch screen but am disappointed in the color depth and have trouble finding the mouse. I have hooked up the monitor that was on the desktop and that is resolved.
Overall, I am pleased and glad to be updated to 8.1 and would recommend this laptop. GAH in Oregon
Everything is in good condition. I was new to Windows 8 and it took a little time to get use to it. It's an entertainment laptop so I don't mind the size and weight of it. The touchscreen is just fun and easy to use. Hooking a HDMI from laptop to tv was great. The touchscreen still works even if you only have the tv screen in use.
This is a very nice upgrade to the Compaq 17.3 laptop we bought six years ago. The 17&#34; touch screen(it's like a really big tablet with a keyboard and mouse included), processor, and video are the best features. I look forward to another six years of usage with this new system and highly recommend this product.
after sending another notebook back to amazon i ordered this one. my experience has been that many notebooks in this price area are junk. this one feels well made and the keyboard has a good touch. i am not a gamer now using some intense software. this has plenty of power for email, youtube, word processing, photo editing, excel and the like. If you have not used windows 8 be ready to tear your have a touch screen.
Unfortunately we will all be dragged into using the latest windows eventually. So this notebook takes you there. I maintain about 26 PCs in various forms for home and work. So i needed to learn the new windows OS. That is the main reason I replaced my old one with this. 17&#34; is really big for a notebook and i found that helpful.
Very pleased with Hp touchscreen.I like having the cd/dvd player.Would buy again especially the 17 inch screen. good color definition.
I ordered this product &#34;new&#34; and received a refurbished computer. I should receive either a new computer or the price difference should be returned to me!! !
Answer: It comes with 64-bit Windows 8.1 installed and includes 6 GB of  RAM and an Intel I5 processor.