Notebooks & Netbooks

[brummyfan2]

Right click the speaker icon in Taskbar, select Sounds and change to "none" from the dropdown menu.

[GuruAid-CS]

If you're able to login to your desktop and hearing the sound at the Windows login screen, it could be  the noise of your desktop theme. Or it could be from a third party application loading on startup. First check the sound scheme. Here's how to do it:
1.    Open Control Panel (Start ' Control Panel)
2.    Open 'Sounds'
3.    Go to the Sounds tab.
4.    In the sound scheme list, select a different scheme than the one that is already selected.
5.    Restart and check if you still hear the pinging noise.

If you still continue to hear the noise, try doing a clean boot. You can refer to this document for how to do a clean boot:
http://support.microsoft.com/kb/929135

If you're unable to login at all, and hearing beep sounds, refer to this link for beep codes troubleshooting:
http://www.computerhope.com/beep.htm

GuruAid

[quovadis]

Thanks for all the help , what it appeared to be was if there was a key stuck on the keyboard and showed 9999999in search engines etc ...anyway cutting to the chase it was a serious virus which I couldnt get hold of despite all the software thrown at it . I decided to undertake a fresh install to factory deafult and then build up to windows 7 ultimate and all the updates .... and its been first class ... so out there it appears to be some serious malware ......... 

regards