How to fix my laptop's sound card?

I have a Lenovo U400 and one day when I tried to load up a video I found it wasn't working. I had the sound up, the mixers were fine and nothing seemed to be messed up. I went to turn on spotify thinking it was something up with youtube or my video player and it told me my sound card wasn't working properly. I'm not the most amazing when it comes to hardware but I know there's no dedicated sound card in my laptop. I don't know where to find it let alone how I would need to fix it. Is this an issue I can fix, or do I need to get an external sound box/card?

Computer keep Bluescreening?

My computer keep blue screening no matter what. I tried every option on the advance start up mode including starting from an earlier date. All options lead to the blue screen.

Blue screen technical information:
0x0000007B (plus some)

My computer is a Lenovo thinkpad x220
Running window 7

Ask for more info if required

Laptop goes into sleep mode by itself?

I recently got a Lenovo B575 laptop off of Craigslist and so far I'm pretty happy with it. Before I got it, the girl informed me that the battery only lasts 3-4 hours and I told her that's no problem. I just ordered a replacement battery for it today, anyways.

But one problem I have noticed, that's really starting to get on my nerves, is the fact that the laptop will randomly go into sleep mode by itself. There doesn't seem to be anything to trigger it, it just does it out of nowhere. I've already checked the power settings and I disabled the sleep mode settings, so it's not that. And it'll go into sleep mode whether it's plugged in or not, even when the battery is fully charged.

I'm not sure what's causing it or how to fix it, but other than that problem it's a pretty great laptop, I have no other complaints. It's just extremely annoying having it go into sleep mode by itself randomly, then having to wake it up and sign back in.

Computer, what do you think the problem with my laptop is?

It is Lenovo Y580.

When the Laptop was on, I clicked on "reset battery indicator" (I'm not sure about this term in English, coz I'm not a native speaker), and then the charge indicated 100%, and dropped to zero afterwards. Then, the computer shut down, and can't be powered up again. No LED lights flashes indicating power is available. It does not work without the battery either.

Any help or idea?

Added (1). *battery gauge

Which 15 inch laptop to buy? How to record video game like league of legend?

I want a 15 inch laptop mostly to play game but i do some of my school work too. I was looking at asus R.O.G g 55vw and lenovo y510p. Both laptop have their pro and con. The asus one have huge cooling system while lenovo have the systen to exchange the part, graphic card… Therefore i need your sugesstion to help me out. Hope you will be able to help me out with my problem in finding a way to record my game and post it on youtube.

First Laptop (University) Asus: Older Zenbook vs Brand New Vivobook?

I have always wanted an asus laptop. I've heard great things about them in terms of reliability (ranked 3rd best brand after Apple and Lenovo).

I'm buying my first laptop for my first year of university.
I game: Though I don't play shooters on PC (currently playing maplestory) .
I create word excel and graph documents, watch youtube and love to research.
Though I'll be living on campus, I'll be on the road a lot as I'll have to cross the border from Canada to the States for track & field with the ncaa.

Pros and Cons of each choice?

These are my favourite deals that I have found in my research. In terms of aesthetics and style, I, and most others I assume, love the Zenbook.
Which is a Better buy?
UX302LA: http://www.bestbuy.com/...&cp=1&lp=2

Q302LA: http://www.bestbuy.com/...&cp=1&lp=5

Thank you

Added (1). ATTENTION LINKS ABOVE DO NOT WORK: USE THESE

Q302LA: http://www.bestbuy.com/...&cp=1&lp=5

UX302LA: http://www.bestbuy.com/...&cp=1&lp=2

I have to buy a new laptop from the 4 available options. Kindly advise which is the best?

I have to buy a new laptop from the 4 available options. Kindly advise which is the best.

The available options are below:

1) HP g004AU Ultrabook 15.6 inch (39.62 cm)

2) Hp 15 d008tu Standard Laptop, 15.6 inch

3) HP Pavilion 15-r036TU Standard Laptop 15.6 inch (39.6 cm), Sparkling Black

4) Lenovo Flex 10 59404493 Standard Laptop, 10.1 inch (25.6 cm)

Please note it has to be one of the 4 above as i have to buy in from reliance digital store with the gift cards i have and these are the only 4 options available in the 20-26 K range.

Kindly suggest which one would be the best and why.

Graphics Card and Dual Monitors(READ ADDITIONAL DETAILS)?

I'm currently on a Lenovo IdeaPad Z710(Laptop) with an Intel i5 processor and Intel(R) HD Graphics 4600. I'm planning to include a second monitor to help with my multitasking and stuff like that. I'm just wondering if my Graphics card can handle this while running a game such as League Of Legends or CS: GO On the Laptop and skype callls and stuff on the other monitor.