Problem installing assasins creed 3?

I just bought a new laptop its the lenovo z50-70 and i t'm trying to install assasins creed 3 and while installing it says error unpacking unarc.dll returned error code: -6
what's wrong?! I just bought this laptop like an hour ago!

Help on details of Laptop Manufacturer and Graphics Manufacturer?

Ok, recently i've been thinking of buying a new laptop and i searched on the internet… But what I can't do is decide on some facetors such as the laptop manufacturer and graphics manufacturer and which ones are best. My budget is medium range… Neither too low nor too high… As I'm gonna buy it from Bangladesh my range is around Tk. 50,000 (U$D 650).many brands are available here.here are my questions below

1. Which Laptop manufacturer is better between Lenovo, Dell, HP, Acer and Asus?

2. Which integrated graphics are better between Intel, Nvidia, ATI and AMD?

I will use the laptop for casual gaming and stuff

I have a Lenovo Thinkpad W540 and after windows 8.1 was downloaded, my audio does not work?

I have a Lenovo Thinkpad W540 and after windows 8.1 was downloaded, my audio does not work?

Added (1). The icon at the bottom of the page is xed out, when i click it to see what the problem is, it tells me that either or both of the windows audio/windows audio endpoint are not enabled. I checked to make sure both were running and enabled and i even checked to make sure their dependencies were up. All were enabled and running except for the windows audio. It would not let me start it. I have been searching all day for an answer and still nothing.

Added (2). I'm also having issues getting the windows store and the control panel to load.

Added (3). I'm also having issues getting the windows store and the control panel to load.

Nvidia GTX 660m or GT 750m?

I'm not a heavy gamer. But the games I play more frequently are The Sims 2 & 3. As well as The Sims 4 and The Sims Medieval. I'm considering two laptops:

Lenovo y580 i7 and gtx 660m

Alienware 14 i5 and gt 750m

Which of the two will perform better with high settings?

Can a decent gaming laptop do everything a workstation laptop can do?

For example I'm thinking of getting either the Lenovo y50 or y70 half for gaming and half for school work. So could it do all the arts, Design technology and programming stuff a workstation laptop could do. This is the specs:
2.5 GHz Intel Core i7-4710HQ (Haswell)
8GB of DDR3L RAM
1TB HDD + 8GB SSD Cache
NVIDIA GeForce GTX860M with 2GB
17.3" IPS Touchscreen
Full HD 1920 x 1080 Native Resolution
External SuperMulti DVD Burner
802.11ac Wi-Fi, Bluetooth 4.0
Windows 8.1

Which is better for gaming?

http://www.johnlewis.com/lenovo-g505s-laptop-amd-a10-8gb-ram-1tb-15-6-black/p1639208 or
http://www.johnlewis.com/lenovo-flex-2-dual-mode-laptop-intel-core-i5-8gb-ram-1tb-15-6-touch-screen-white/p1741065

Ps. Not bothered about cheaper prices just need to know about gaming

Laptop won't accept correct Wi-Fi password?

Just got a lenovo. Trying to put it on Wi-Fi (doesn't have ethernet - great!) and it's the same password that works with the ipod, tablet and console here at home, yet it just will not accept it. Even turned on my cellphone's mobile Wi-Fi option to test it and, yes, the computer does work with the phone's Wi-Fi signal. So what the hell?

What do to do to make laptop faster?

I just bought a laptop from lenovo. It's lenovo g4030 80fy002aph intel celeron n2830 but it's too slow and I can't have ot exchanged for a faster laptop on the store where I bought it. It has built in windows 8.1 OS, the kind where you just have to press a single button on the sides to reformat it. I'm thinking if switching it to windows 7 will make it faster (but the licensed windows 8.1 will be scrap)

What does a touch screen laptop offer?

I'm talking ab actual laptop. Not one of those hybrid ones whee you take of the screen like a surface. Also what is the best one in your opinion. Need this for a gift for Christmas.