How to reinstall sound driver?

How to reinstall sound driver? - 1

Added (1). how can i reinstall sound driver in windows 8?
i'm using a lenovo lap top

Added (2). model lenovo B570e windows 8.1

I'm trying to boot a usb system image, but I can't find the option in my BIOS?

I have a Lenovo Yoga 3 pro with win8.1 preinstalled. I wasn't able to use the built in image creator to install the image directly onto the usb, so I mad a partition on an external HDD, and then used minitool (a partition manager) to copy that partition onto my flash drive. I have booted from USB before, I know that my system is capable of doing that, but the flash drive doesn't appear in my bios menu. Even worse, I can't see the flash drive in windows explorer anymore. My end goal is to use a different OS, but to keep a copy of my preinstalled OS and partitions that I could restore whenever I wanted. This is causing me a lot of headaches… Any ideas?

Lenovo a6000plus network problem?

I bought and I have aircel 3g sim(a.p).in my old phone it running very fast but in a6000 plus it running very slowly please fix it. I already using 3g in my phone thought

My Windows 8.1 Lenovo PC will not boot correctly after update?

I have a Windows 8.1 Lenovo brand PC. It recently prompted me to update so I did, and now when I try to startup the PC, it says Lenovo for about 5 seconds and then the PC turns off EVERY SINGLE TIME! I got it to somewhat boot where it told me it couldn't boot correctly and then gave me about 5 options which included Recovery Disc, Startup Repair,(etc.). What could have caused this and how can I fix it? Keep in mind that I can't even get as far as the login screen.

Wi-fi problems. Please. G700?

I have a Lenovo G700, with 802.11b/g/n Wi-Fi connectivity.
My rooms upstairs and I use an extension to get Wi-Fi though I'm quite close to the lan downstairs considering.

It gives the illusion of full bars but in reality, if I were to watch a youtube video the auto-resolution is 144p D:
What can I do to fix this? Is there a way to upgrade a computer part or get a new extension or do I have to live with it: l

Many thanks
C

ps. Is there also something I could change so my computer doesn't freeze when I try to screencast?

Can the MSI Wind U100x run Windows 10?

You see, my grandfather gave this netbook to me. He bought a newer Lenovo and gave me this one. Now, before he gave it to me, he upgraded it to Windows 7 (it was on XP originally), and it works fine.
Now I've been given a notification that, when available, Windows 10 will be free to me. I reserved my free copy almost immediately, but now I have concerns. Can it even run Windows 10? I don't want it to break.

Can a virus stop my computer from turning on?

I was messing around on my lenovo c340 and the update needed pop-up came up, so I pressed restart, and the computer turned off. I waited about a half an hour for it to turn back on, or show anything, and it didn't, so I went over and pressed the power switch (it was dark, meaning it was off) to turn it on. Nothing happened, so I tried again, nothing. I checked all the plugs, and everything was properly connected, so I tried unplugging the cord and plugging it into a different outlet. Still nothing. I decided to wait about 4 hours and try it again, which I did. Nothing. I have tried holding the button down, resetting the fuse and everything.