User’s Manual

ASUS PRIME Z390-A
2-19
Chapter 2
2.3 Starting up for the first time
1. Aftermakingalltheconnections,replacethesystemcasecover.
2. Ensurethatallswitchesareoff.
3. Connectthepowercordtothepowerconnectoratthebackofthesystemchassis.
4. Connectthepowercordtoapoweroutletthatisequippedwithasurgeprotector.
5. Turnonthedevicesinthefollowingorder:
 a. Monitor
 b. Externalstoragedevices(startingwiththelastdeviceonthechain)
 c. Systempower
6. Afterapplyingpower,thesystempowerLEDonthesystemfrontpanelcaselightsup.
ForsystemswithATXpowersupplies,thesystemLEDlightsupwhenyoupressthe
ATXpowerbutton.Ifyourmonitorcomplieswiththe“green”standardsorifithasa
“powerstandby”feature,themonitorLEDmaylightuporchangefromorangetogreen
afterthesystemLEDturnson.
 Thesystemthenrunsthepower-onselftests(POST).Whilethetestsarerunning,the
BIOSbeeps(refertotheBIOSbeepcodestable)oradditionalmessagesappearon
thescreen.Ifyoudonotseeanythingwithin30secondsfromthetimeyouturnedon
thepower,thesystemmayhavefailedapower-ontest.Checkthejumpersettingsand
connections or call your retailer for assistance.
BIOS Beep Description
Oneshortbeep
VGAdetected
Quickbootsettodisabled
Nokeyboarddetected
Onecontinuousbeepfollowedbytwo
shortbeepsthenapause(repeated)
Nomemorydetected
Onecontinuousbeepfollowedbythree
short beeps
NoVGAdetected
Onecontinuousbeepfollowedbyfour
short beeps
Hardware component failure
7. Atpoweron,holddownthe<Delete>keytoentertheBIOSSetup.Followthe
instructionsinChapter3.
2.4 Turning off the computer
WhilethesystemisON,pressthepowerbuttonforlessthanfoursecondstoputthesystem
onsleepmodeorsoft-offmode,dependingontheBIOSsetting.Pressthepowerbutton
formorethanfoursecondstoletthesystementerthesoft-offmoderegardlessoftheBIOS
setting.
E14498_PRIME Z390-A_UM.indb 19 8/22/2018 10:21:05