How to enter bios on Dell laptop

How to enter the bios of Dell notebook:

The new version of BIOS is improved on the basis of Phoniex BIOS, which is better than other brands of notebooks. With the same up-and-down menu-based BIOS, Dell has not only added a complete hardware diagnostic system, but is also superior in terms of interface ease-of-use and detailed description text. After booting, when the prompt message appears in the upper right corner of the screen, you can press the F2 key to enter the BIOS directly; you can also press F12 to enter the boot device selection menu and select "BIOS SETUP" to enter.

The top of the BIOS interface displays the notebook model, the left side is the function tree, and the right side is the current status and description text.

The interface is like this, and the operation direction is similar to Windows Explorer: use the up and down arrow keys to move the cursor, use the left and right arrow keys to expand/collapse sub-items, press the Enter key to enter settings, and then press Enter to return. After setting, press the ESC key, select "Save/Exit" to save and exit, and select "Discard/Exit" to exit without saving.

There is a little trick, press Alt F to quickly restore factory settings.

BIOS setting functions:

1. Processor Serial Number

(processor serial number) option. This option is used to disable or enable the Penfium III processor-specific serial number. If there are no special needs, it is recommended to keep the default Disable setting.

2. Serial Pont

(serial port settings) option. This option is used to set the enable/disable of the serial port and change the interrupt settings of the serial port. It is recommended that T/A/I series IBM laptops with serial ports turn on the serial port settings (Enable). If there is a conflict with other hardware, you can change it yourself. As for the X series without a serial port, it is recommended to set it to Disable.

3, Infrared

(infrared interface settings) option. This option is used to set the enablement and interruption options of the infrared interface. Different from the general laptop BIOS, the IBM laptop BIOS does not have infrared speed protocol settings. All infrared speed protocols are set in Windows.

4. Parallet Port

(parallel port settings) option. This option has the same principle as the serial port setting, and the setting principle is the same, except that in the parallel port setting, you can also choose to use three modes: Bi-directional, ECP, and Output Only. Under normal circumstances, it is recommended to set it to Bi-directional, and enable ECP mode only after confirming that the device connected to the parallel port supports ECP mode.

5, PCI

(PCI interrupt setting) option. This option is used to set the interrupt for each PCI device. Under normal circumstances, the default settings should be used and try not to modify them, otherwise the network card, modem or sound card may become unusable.

6. KeyBoard/Mouse

(keyboard and mouse) options. Although there are not many options here, it is where problems are most likely to occur. Many laptop users use an external mouse, so this option must be set correctly.

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