One , latitude c, cp, cs series :

 

1 , start the computer, when you see the dell splash screen , press "f2" key to enter the bios;

 

2, according to "alt + f" cmos restore the original settings , press the End key after you hear this combination of crisp "bi" sound , which means that the operation is successful .

 

Two , latitude l series : 1 , start the computer, when you see the dell splash screen , press "f2" key to enter the bios; 2, press "alt + f" key combination cmos restore the original settings , press the End key combination ? If, after you hear a crisp "bi" sound , which means that the operation is successful .

 

inspiron series laptop

 

One , inspiron 5000 (e), inspiron 2100, inspiron 2500: 1, start the computer, when you see the dell splash screen , press "f2" key to enter the bios; 2, after entering the bios, press "f9" restore cmos?? original settings.

 

Second, other inspiron models:

 

1 , start the computer, when you see the dell splash screen , press "f2" key to enter the bios;

 

2, according to "alt + f" key combination cmos restore the original settings , press the End key after you hear this combination of crisp "bi" sound , which means that the operation is successful .