How to access HP notebook BIOS ?

I bought HP Compaq Presario CQ62. That laptop's CPU is AMD and OS is Windows 7. Actually I'm not professional in windows 7. May be Windows 7 is graphic very good, but not familiar me. Then I want to try change windows. I didn't access by traditional methods. For example I push DEL, F2, etc. I can't access BIOS and can't change BOOT configuration. I see some information to press F2.

There , if you want to more information about Boot.

Please visit to http://www.hp.com/go/techcenter/startup

That's very usefully for me. I change my OS.