Audio driver is gone. how to instole it again?

You can download and then install the audio drivers for your laptop, these are available from your laptop manufacturer's WEB site.
I cannot give you the link to this WEB site because you did not provide the details of the make and model of your laptop.

1st You download Webcam Driver.
Havit web cam driver is lost i want new driver to instole
After this install the Webcam driver in the system.
Installation of Webcam Driver
Go to the control panel
Click on the System Icon
Click on the Hardware Tab
Click on the Device Manager s
Select the Unknown Device or printer device where yellow Question Marks sign on it.
Right click on it and uninstall it.
After this go to the top of the device manager and click on scan for hardware changes.
Driver installation Wizard start.
Brows Your Driver from the Hard Disk and click on next.
Driver will be install.

Install driver.

You can download the device drivers from theCompaq/HP WEB support/download page. Make sure you select your model laptop andthe Windows drivers you require and install them. Click on this link todownload the drivers: -
www.compaq.com/country/cpq_support.html

It would have been quicker for you just to have gone to the compaq web support page and downloaded it yourself.
Be Brave, google dont bite.......
Here is your link if you dont want to try
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?os=228&lc=en&cc=us&dlc=en&sw_lang=&product=500508

You can download the drivers from Dell WEB site, the support download page. Make sure you select your model desktop or laptop, better still, type in the Service Tag number, it is printed on the label on the bottom of the laptop and on the back or sides of a desktop. (If the Service Tag label is missing then go into the BIOS setting and on one of the BIOS pages, the Service Tag number will be displayed). This will open the page where the specific drivers for your model computer are located. Also make sure you select the Windows XP or Vista version of the drivers for your Windows operating system. Click on this link to download the drivers: -
http://support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen

Canon image class mf6550 Error E000

your pc in remover the printer and un instol the printer and again instol
the printer driver cd aply and chouse your printer and restart pc.

Check device manager. This can be done in Win XP by right clicking my computer, properties, hardware, then click device manager. Alternative way to enter device manager is by clicking start menu, control panel, system (performance and maintenance), hardware then device manager.

In the deice manager window see if any question marks or exclamation points are visible.

If so, see if it the mark is for an audio device.

If it is an audio device, uninstall the device.

Next, try to install the sound card driver again. If that fails, the enter the device manager and uninstall the sound card again, restart the PC, ignore the hardware manager, and try to install the sound card driver software again.

Instoler ??? or Installer ???