Article Number: 000126023
The Real-Time Clock (RTC) reset function allows you or the service technician to recover Dell Inspiron, OptiPlex, Dell Precision, Vostro, or XPS Desktop computer from issues such as No POST, No Power, and No Boot. Examples of these issues include;
RTC reset of the motherboard helps to bring the computer to a functional state without replacing any hardware.
The legacy jumper that enabled a hardware-based RTC reset has been retired on these models.
Start the RTC reset with the computer powered off and connected to AC power. Press and hold the power button for thirty (30) seconds. The RTC Reset occurs after you release the power button.
The RTC Reset does following changes.
During the reset process, the computer restarts several times and depending on how it is configured. You may see keyboard backlight or other LED indications during the period the power button is held and after it is released. Once the reset is complete, the computer reboots and the Dell Splash screen display indicates reset success.
The following items are unaffected by the RTC reset:
These items may or may not reset based on your custom BIOS setting selections:
If you are still experiencing issues with No POST, No BOOT, or No POWER on your Dell computer after performing the RTC reset, and you are unable to find a solution for these symptoms on Dell's support website, you can contact support at the following location: Contact Technical Support.
|Dell G5 5000 MT
Dell Precision 3440 SFF
Dell Precision 3640 MT
Inspiron 3680 SFF
Inspiron 3880 MT
Inspiron 3881 MT
Vostro 3090 MT
Vostro 3681 SFF
Vostro 3881 MT
Vostro 3888 MT
Vostro 5880 MT
XPS 8940 MT
|OptiPlex 21-3280 All-in-One
OptiPlex 24-5480 All-in-One
OptiPlex 24-7480 All-in-One
OptiPlex 27-7780 All-in-One
OptiPlex 3080 Micro
OptiPlex 3080 SFF
OptiPlex 3080 Tower
OptiPlex 5080 Micro
OptiPlex 5080 SFF
OptiPlex 5080 Tower
OptiPlex 7080 Micro
OptiPlex 7080 SFF
OptiPlex 7080 Tower
Dell desktop computers launched prior to this document have a motherboard jumper-based reset function. If your product was shipped prior to April 2020 and is not listed above, then the computer will most likely have a jumper-based reset. See your product service manual for more details.
Desktop computers released after products listed in Table 1 have RTC Reset function enabled by default.
For more information about Dell Portable Producs, see How to Reset the Real Time Clock (RTC) to recover your Dell Portable computers.
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