The AC power adapter wattage and type cannot be determined .
The battery may not charge.
The system will adjust the performance to match the power available.
Plese connect a DELL 65W AC adapter or greater for best system performance.
To resolve this issue,try to reseat the power adapter.
Strike the f3 key (before the f1 or f2key)if you do not want to see power warning messages again.
Stike the f1 key to continue ,f2 to run the setup utility.
Press f5 to run onboard diagnostics.
望有电脑高手帮忙诊断一下
