Do I need to update the BIOS before installing new memory modules?
Yes, you must update the computer to the latest BIOS before adding new memory modules. Failure to update the BIOS prior to installing new memory may result in various system problems. To update, navigate to www.hp.com, go to Support & Drivers, search for your computer model, and download the latest BIOS. (Page 50)
From the official HP Probook 4540s Notebook PC manual, page 50
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