|Identify your computer, or BOTH computers if your topic is about two of them.|
For your Lenovo laptop
Find your specific Product number and tell us what it is:
Finding my product number
Find it on the bottom of your laptop,
or, if you access that web page on your Lenovo computer, see this on that page:
Automatically detect this system's product number (machine type / model)
If this topic is about 2 computers, if the other one is not Lenovo ....
Tell us the make and model of your brand name system, or if you have a generic desktop system, the make and model of the mboard.
The specific model of a brand name system is often shown on a label on the outside of the case somewhere, or it can often be determined by going to the brand name's web site and loading a program they have available, if Windows is still working, on the subject computer.
If it's a Dell computer...
Go here for how to find the Service tag "number":
Tell us what it is.
If it's a HP or Compaq computer.....
Scroll down a bit.
Look for the similar label on the outside of your computer.
Quote the specific model number - that's at the end of the first line.
Quote the Product number - that's on the third line.
The model, sometimes the make, of a mboard in a generic desktop system is usually printed on the mboard's surface in obvious larger characters, often between the slots.
Obviously, check your keyboard for keys that are sticking in the down position.
If that doesn't help, it's common for laptop and netbook keyboards to malfunction after they have been used a lot, or at any time if liquid has been spilled on them or the laptop or netbook has been dropped.
Keyboards for laptops and netbooks are a frequently replaced item. There are usually lots of new clone keyboards for your laptop or netbook available on the web for a reasonable price.
However, you need to determine which keyboard part number you have in order to be able to select the right new one to buy.
Usually the part number for the keyboard is on a label on the bottom of the keyboard. You need to find out how to remove the keyboard to find that. In most cases, there is a Service or Maintenance manual available for your model or model series that tells you how to do that - either a download available from the maker of the model, usually easily findable in the support and downloads for your model, or they may not have that but the same may be available when you search on the web for free or for a small fee.
"also my pc audio not working "
If this is a desktop computer.....
- are you sure you have speakers plugged into the correct jack (e.g. colored green for a single pair of amplified speakers) ?
Usually you MUST use amplified speakers (meant for use with a computer) - in most cases the sound adapter does not have enough output signal strength for un- amplified speakers to produce sound.
Do you have more than one sound adapter ?
If yes, Windows supports you having more than one, but it can only use one of them at a time - the other one(s) will not produce sound.
You can easily change which sound adapter Windows is using.
Drivers / associated software must have been installed for each one that you are using.
Have you installed Windows from scratch since the sound last worked ?
If yes, Windows probably does not have the drivers for your sound adapter built into it - you probably need to install the drivers / associated software for your sound adapter.
Is Device Manager showing that your sound adapter is working properly ?
Is there a yellow ! or a red X beside it there, or an Unknown sound device or similar ?
(RIGHT click on My Computer - Properties - Hardware - Device Manager - Sound , video and game controllers - the name of your sound adapter.
If Device Manager shows the sound adapter is working properly.....
Have you check the Windows sound mixer settings to make sure volumes are not set too low or Muted (Mic should be muted there when you're not using a program that can use a Mic) ?
(RIGHT click on the speaker icon in your taskbar lower right - select Open volume control. )
If it's a laptop or netbook....
The headphones jack on laptops and netbooks has a mechanical switch inside of it. It's supposed to disable the sound from going to the speakers built into the laptop or netbook whenever you plug a plug (on a cord) into the headphones jack.
If you have plugged into the headphones jack a lot, it's common for that mechanical switch to malfunction. You could try plugging a plug into the headphones jack, wiggling it, then pulling it out, that may get one or both speakers working, but the only real solution is to replace the headphones jack - that's an item frequently replaced by laptop repair places.
OR - you could make do by plugging amplified speakers into the headphones jack.