Can i use my lenovo all in one as a stand alone?

I will be working from home in the next month or so. I have a Lenovo all in one but the job requires a stand alone monitor because they will be supplying the computer. I don't want to buy a new 22 inch stand alone monitor if I don't have to. Is there a way to connect an external pc to my all in one?

Why is SWTOR PVP lagging?

I used to play SWTOR on my Lenovo G560 notebook but I still got lags while playing PVP (with low details). What is the reason? Could it be caused by the fact that I was on English server, while I live in Slovakia?
Or is it game's fault? And if so, is it getting fixed?

My one week old computer now has a red dot on the screen?

I'm an artist, so any dots on my screen or blemishes really affect my art. Today a tiny red pixel/dot showed up at the center of my brand new Lenovo Yoga 3 14, and I don't know what to do. This happened to my older computers, and I'd press the screen hard and it would vanish, but I can't do that with this hard touch screen.

Should I be concerned? What do I do to get rid of this?

Lenovo C364 All-in-One - How(if possible) to change the hardware - CPU/APU specifically?

Hi, I have a Lenovo C365 All-in-One:

Processor: AMD E-1 2500 APU with Radeon(TM) HD Graphics 1.40 GHZ

RAM: 4.00GB (3.45 usable)

System Type: x64 based processor

I want to upgrade the hardware somewhat, especially the processor to a Intel Core i7-4710HQ. Now I have basic knowledge of computers but I do know my CPU is letting down my system.

Is it possible to change the hardware and upgrade it on an all-in-one or do I need to buy a whole new computer?

Also, my computer tells me it has 2 memory(RAM) slots and yet one is in use - 4GB. First of all, I thought RAM was installed in pairs and second, why does a computer come with 2 slots if it can only use one? Plus, it says maximum usable capacity: 4GB, what will happen if I install more?

Thanks.

Added (1).
Lenovo C364 All-in-One - How if possible to change the hardware - CPU APU specifically - What my computer tells me about the RAM installed.

Updating Windows 8.1 to 10? Does 10 fix resolution and blurry/small programs problem?

Simple question: Will updating to Windows 10 fix the blurry programs and high DPI issues found in 8.1?

I'm an artist and I just got a new computer (Lenovo Yoga 3 14, with 1080p) that came with Windows 8.1, and I can't deal with the blurry font and high DPI tiny program issues. Especially with photoshop, which I can't even use on 1080p mode because the cursor is wonky and unusable, and I can't see the settings without using a magnifying glass. Will updating to Windows 10 fix some of my issues, or is it worse? Is it easy to switch back if it turns out that I don't like it?

Planning to buy lenovo k3 note?

Planning to buy lenovo k3 note, but don't know whether it's sound quality and overall specifications are better than Xperia L or not.