No audio device

Try re-installing the audio driver.
You can download the drivers from the Compaq/HP WEBsupport/download page. Make sure you select your model laptop and the XP or VistaWindows version of the drivers you require and install them. Click on this linkto download the drivers: -
www.compaq.com/country/cpq_support.html
I suggest you install service pack 3 - this is the latest XP service pack

Your browser is corrupted, reinstall it.

http://download.softpedia.com/dl/67726aafea796ee43af7c61c08816bbc/4a479ec8/100030373/software/system/info/everestultimate502.exe
<<download this then get back to me once you have installed it

You need to install the audio driver. Go to the Acer WEB site to download the drivers you need, make sure it is Windows XP version for your particular MODEL laptop. Use this link :- http://global.acer.com/support/download.htm By the way, the latest Service Pack for XP is SP3 you should download this and install it, try to borrow SP3 on a CD because it is approx. 350Mb in size.

After you install Microsoft Windows XP Service Pack 2 on a computer that is running Microsoft Windows XP, the universal serial bus (USB) drivers do not appear to update. CAUSE After you upgrade from Windows XP to Windows XP Service Pack 2, the USB drivers... loadTOCNode(1, 'cause'); After you upgrade from Windows XP to Windows XP Service Pack 2, the USB drivers appear with the earlier version numbers, even though the files have been updated. Back to the top RESOLUTION To resolve this problem, install Windows XP SP2, and then update the drivers for... loadTOCNode(1, 'resolution'); To resolve this problem, install Windows XP SP2, and then update the drivers for the USB devices that are connected to your computer. To update these drivers, follow these steps:

1. Click Start, click Run, type devmgmt.msc, and then click OK.
2. Double-click the type of device that you want to update.
3. Double-click the specific device that you want to update.
4. Click the Driver tab, and then click Update Driver.
5. Follow the instructions in the Hardware Update Wizard.
6. Repeat steps 2 through 5 for each USB device.

Note You can also install Windows XP SP2, and then disconnect and reconnect the USB devices that are connected to your computer. By doing this, you start the Plug and Play utility. The Plug and Play utility updates the version numbers for the drivers.

install audio driver from lenovo website

cd driver
P4VM800M7 Motherboard

- service pack 3 has been released , try to install it.

plz try by reloading the sound driver from *********** board cd,plz post your findings

go to the support site for your motherboard, there you will get universal bus architecture device drive. Install this before you install the Audio/Sound driver.