No sound with lenovo 3000 h series desk top - Lenovo 3000 C200 Notebook

First, is the computer coming on, do you hear the boot up beeps and sounds. if that is happening, try another monitor, if that works, buy a new one, if that does not work, repalce the video card. if none of that works, take the machine to a local shop for analisis. This might remotely be caused by a virus, but if you are using a good virus protection, it should have caught it.

on some pc's that would mean it does not detect any RAM present.
here is the Maintenance Manual for your series :

http://download.lenovo.com/ibmdl/pub/pc/pccbbs/thinkcentre_pdf/41t3751.pdf


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Tallon41

use system restore.

serch online for new drivers on the ibm site

Go to this website for free download of all Lenovo 5313 or K210 Drivers ..
http://consumersupport.lenovo.com/us/en/DriversDownloads/drivers_list.aspx?CategoryID=23

Go to the Audio drivers area, select which applies to your Windows version XP, Vista or Windows7

try downloading and installing the driver from here
http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-63572

This is the closest I can get to your drivers without more detail on your system - drivers

I use always XP SP2, Vista & Win 7 are brain dead for older hardware, drivers etc, XP SP2 always works, maybe SP3, sometimes.

Try uninstalling the drivers for the web cam and reinstalling it make sure you computer is up to date for Windows.
And then reinstall the drivers

Try to boot a different cd, to determine whether the drive is bad or if the cd is bad. If it is the drive, you can try cleaning it or replacing it. If it is the XP cd, borrow one fro a friend and use your license, which should be on you unit.

The drivers could be down loaded from the Lenovo/IBM web site.

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309