How to get into bios setup on a old dell latitude ppl?

f2 doesnt work or f8 or delete or any of the keys. Does anyone know what the correct key is for sure? (google search did not work to well)How to get into bios setup on a old dell latitude ppl?
Dell庐 400 F3

Dell 400 F1

Dell Dimension庐 F2 or DEL

Dell Inspiron庐 F2

Dell Latitude Fn+F1 (while booted)

Dell Latitude F2 (on boot)

Dell Optiplex DEL

Dell Optiplex F2

Dell Precision鈩?F2



Warning: The instructions listed may vary depending on the make and model of your computer. Numonics does not assume responsibility for any problems that may occur by using this information. We recommend you use the documentation provided with your computer to access the computer setup and change serial port settings. If you have questions, please contact your computer manufacturer.

http://www.numonics.com/support/bios.htm



If it doesn't work try asking at Dell Community

http://www.dellcommunity.com/How to get into bios setup on a old dell latitude ppl?
Thank You.

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