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Chapter 4. Troubleshooting
Other problems
Your computer does not
respond.
• Toturnoffyourcomputer,pressandholdthepower
buttonfor4secondsormore.Ifthecomputerstill
doesnotrespond,removethebatterypackandthe
ACpoweradapter.
• Yourcomputermightlockwhenitenterssleepmode
duringacommunicationoperation.Disablethesleep
timerwhenyouareworkingonthenetwork.
I need to start the computer
from a connected device,
but the device does not
appear on the boot device
list.
• CheckthebootmodesettingintheBIOSsetuputility.
IfBootModeissettoUEFI,makesurethatthe
deviceorthemediuminthedevicesupportsUEFI
boot.Ifthedeviceorthemediuminthedevicedoes
notsupportUEFIboot,setBootModetoLegacy
Support.Ifthedevicestilldoesnotappearinthe
bootdevicelist,replacewithanewdeviceor
medium.
The connected external
device does not work.
• Donotconnectordisconnectanyexternaldevice
cablesotherthanUSBwhilethecomputerpoweris
on;otherwise,youmightdamageyourcomputer.
• Whenusingahighpowerconsumptionexternal
devicesuchasanexternalUSBopticaldiskdrive,use
anexternaldevicepoweradapter.Otherwise,the
devicemaynotberecognized,orsystemshutdown
mayresult.