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Оригинальный сообщение: S W ,


2 things here.

"Alert! The AC power adapter wattage and type cannot be determined. " really does mean something is not right.

If you tried 2 separate genuine dell chargers, and both give you this error, then there maybe something else wrong.  Enter the BIOS, and look at the battery/power section to see if tells you more.  I have seen the power jack itself get messed up, and that may be the cause.  Plugging in a 90W will charge slowly, but will not give a cannot determine message.