Books rare problem ~ ~ ~ ~

Users questions: My books are today's Dell 1520 can not boot up and boot the boot actually appeared that way. . . . TheACpoweradapterwattageandtypecannotbedeterminedThebatteryma ynotchargeThesystemwilladjusttheperformancetomatchthepoweravailablePleaseconnectaDell65wACadapterorg reaterforbestsystemperformanceToresolvethisissuetrytoreseatthepoweradapterStriketheF3key(beforetheF1 orF2key)ifyoudonotwanttoseepowerwariningmessagesagainStriketheF1keytocontinueF2torunthesetuputilityP ressF5torunonbosradiagnostice can only F1 start the BIOS has also resumed normal default boot or normal boot so I ask how one day the whole ah. . . . . . . . . . . . . . . . . . . . . Emergency
Experts answer: screen On the touch screen means that the computer does not recognize the power and type of power adapter may not work for your battery. When you boot with the battery it is not safe? If this is the case, unplug the battery to see. If you can start properly, that is, the battery problem, the battery interface are wiped clean, If not, look at Paul on the sale. If you do not install the battery, then it may be the power adapter problem. The interface to better see how the place kind of interpolation. Or you string a power cord plug. Hope to be helpful to your question.
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