Many Issues plauging my u300s (WiFi adapter, trackpad, sound and battery)

Hi everyone,
I got my Lenovo u300s (i7, 256GB variant) more than two years ago, sometime in April 2012. However, now the laptop has a host of issues. Performance wise, it is great. But the issues are with the parts of the ultrabook.
As follows:
1) My WiFi adapter "dies" after 15 mins or so after turning on the laptop. To re-enable it to work, I need to restart my computer. In the first 10-15 mins, the WiFi works as per normal, then it just dies.
2) My trackpad cannot right click. Makes it very hard to use MS Word and even the Internet as right-clicking is a integral part of using a mouse/trackpad. Otherwise, the trackpad works well and is one of the strong points of the u300s.
3) Sound does not work 99% of the time. The built-in speakers do not transmit any sound, and only occasionally, all of a sudden it will play the sound, and then die back down.
For all three cases, I have re-installed the drivers. But no improvements whatsoever.
If I do decide to send my u300s in for repair, how much might it cost? The u300s cost a bomb, and as such is there any chance Lenovo can repair these defects for free?
Also, on top of that, my battery has become really poor, even though I have not used my u300s much in recent months. It can barely last 2 hours on a single complete charge.
I'm hoping to stick with the u300s, cause like I said performance is still very snappy, but these defects around the laptop just makes it undesirable to use it.
Thanks!

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Solved!
Go to Solution.

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