Hi, here is the information for the dx7500 model.<br>The bios link is <a href="http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=12454&prodSeriesId=3804427&prodNameId=3804428&swEnvOID=1093&swLang=13&mode=2&taskId=135&swItem=vc-73923-1">here</a>.<br>
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