When I start my HP Compaq nc6120 I see the message to make back-up. I tried once but without effect. If I update the BIOS this will solve the problem? Give me an advice, please!

You may try pressing and holding the power on switch for ten seconds after removing power and the cmos battery

remove the bios battery/cmos

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Hi,
Set the bios ,please follow the bellow link,

BIOS set BOOT PIORITYhttp://www.hiren.info/pages/bios-boot-cdromhttp://www.windowsreinstall.com/articles/bios/
http://www.ybet.be/en-hardware-1-23/bios-setup.htmhttp://www.pcbuyerbeware.co.uk/BIOS.htm If you need more information, reply me soon.
Thanks .

Read on this link how to remove the BIOS password: http://www.fixya.com/support/r7229632-reset_or_remove_bios_password

Hi, Hang at start up logo may cause by hardware.
You can try to take out hard disk first. See weather it can go through the start up like normal or not. If cannot, try put the hard disk back and take out the CD/DVD ROM. And try again to start the notebook.
If the problem still remain, your motherboard problem. Change it but it might costly.

try getting into advanced volume settings by double clicking on the speaker icon. some of the volumes may be turned lower

you disable shadow and caching in bios at boot ...
at startup you need to hit f10 (modeels may vary)to enter setup(bios)
in bios make required changes save and exit.

Mike:   Look in your manual to see how to get to the BIOS setup screen. Find the BIOS shadowing or catching and shut it off.    If you need a manual download it. If you cannot get it going again, doing that . Try using the reload CD's. If you don't have one ,again look in the book and see if it is on the hard drive or wher.e If you need additional help, just ask. 
http://h20000.www2.hp.com/bizsupport/TechSupport/Home.jsp?lang=en&cc=us&prodTypeId=321957&prodSeriesId=447346&submit.y=5&submit.x=6〈=en&cc=us

click the link below. if it doesn't work copy and paste the code at the bottom of this post to obtain the document you need. you will need acrobat/adobe reader which can be found at www.adobe.com

once you open the manual the info you need is on page 11. it describes the steps to clearing any cmos info and bios passwords
product manual

http://h20000.www2.hp.com/bizsupport/TechSupport/CoreRedirect.jsp?redirectReason=DocIndexPDF&prodSeriesId=447346&targetPage=http%3A%2F%2Fbizsupport.austin.hp.com%2Fbc%2Fdocs%2Fsupport%2FSupportManual%2Fc00502970%2Fc00502970.pdf