How to Reset Real Time Clock (RTC) to recover your Dell Portable system

How to Reset Real Time Clock (RTC) to recover your Dell Portable system

Summary: This article provides information about how to reset the Real Time Clock (RTC) on a Dell Inspiron, Latitude, Precision, Vostro, Alienware, or XPS PC. In certain scenarios resetting the Real Time Clock (RTC) can help recover your Dell Latitude, Inspiron, Precision, Vostro, Alienware, or XPS PCs from no post, no power, or no boot issues.

Real Time Clock (RTC) reset.

The Real Time Clock (RTC) reset function allows you or the service technician to recover Dell Latitude, Inspiron, Precision, Vostro, Alienware, or XPS systems from No POST/No Power/No Boot situations.

Start the RTC reset with the system powered off and connected to AC power. Press and hold the power button for thirty (30) seconds. The system RTC Reset occurs after you release the power button.

NOTE: Real Time Clock (RTC) reset is available on select Dell Latitude, Inspiron, Precision, Vostro, Alienware, or XPS PCs only. Refer to the table at the bottom of this page.
NOTE: If AC power is removed from the system during the process or the power button is held less than 25 seconds or longer than 40 seconds, the RTC Reset process is aborted.

The RTC reset will reset the BIOS to Defaults, un-provision Intel vPro (The IT administrator’s vPro account and password on the system will be "un-provisioned," and the system will need to go back through the setup and configuration process again to connect it to the vPro server again.) and reset the system date and time.

During the reset process, the system will restart 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 system should reboot and the Dell Splash screen display will indicate reset success.

NOTE: Once RTC reset is complete, the system may remain in a no boot status until the time, date, and other bios settings (SATA drive selections, etc.) are correctly set to boot to Windows. Failing to boot immediately after a reset does not mean that the reset has failed.
You may also need to restore the previous BIOS settings, such as the SATA Operation mode (ex. RAID On AHCI) for the system to reboot normally.

The following items are unaffected by the RTC reset:

  • If TPM is on and Enabled, it is not affected by RTC reset (Remains on and Enabled)
  • Service Tag
  • Asset Tag
  • Ownership Tag
  • Admin Password
  • System Password
  • HDD Password
  • Key Databases
  • System Logs

These items may or may not reset based on your custom BIOS setting selections:

  • The Boot List
  • Enable Legacy Option ROMs
  • Secure Boot Enable
  • Allow BIOS Downgrade

If you are still experiencing issues with No POST/no boot/no power on your Dell system after performing the RTC reset, and you are unable to find a solution searching for these symptoms on Dell's support website, you can contact support at the following location: Contact Technical Support.

Dell Alienware, Inspiron, Latitude, Precision, XPS, and Vostro systems equipped with RTC reset with power rail:

RTC Reset with power rail is a more robust way to reset the BIOS than using a reset using keyboard commands. The RTC Reset with power rail is a physical disconnection of the power from the computer's hardware.

Current Systems:

Alienware Area 51 m
Alienware M15
Alienware M17
Dell G5 15 5590
Dell G7 15 7590
Dell G7 17 7790
Inspiron 5280
Inspiron 5480/5488/5580
Inspiron 5481
Inspiron 5482
Inspiron 5582
Inspiron 5583
Inspiron 5584
Inspiron 7380/7580
Inspiron 7386
Inspiron 7586
Inspiron 7786
Latitude 3190
Latitude 3190 2-in-1
Latitude 3301
Latitude 3390 2-in-1
Latitude 3400
Latitude 3490
Latitude 3500
Latitude 3590
Latitude 5290
Latitude 5290 2-in-1
Latitude 5300
Latitude 5300 2-in-1
Latitude 5400
Latitude 5401
Latitude 5490
Latitude 5491/5591
Latitude 5495
Latitude 5500
Latitude 5501
Latitude 5590
Latitude 7290
Latitude 7300
Latitude 7390
Latitude 7390 2-in-1
Latitude 7400
Latitude 7400 2-in-1
Latitude 7490
Latitude 5420 Rugged
Latitude 5424 Rugged
Latitude 7424 Rugged
Vostro 3468
Vostro 3478
Vostro 3568
Vostro 3572
Vostro 3578
Vostro 3590
Vostro 5480
Vostro 5481/5581
Vostro 5568
Vostro 5580
Vostro 7580
XPS 7590
XPS 9370
XPS 9380
XPS 9570
XPS 9575 2-in-1
Precision 3431
Precision 3530
Precision 3540
Precision 3541
Precision 5530
Precision 5540
Precision 7530
Precision 7540
Precision 7730
Precision 7740

Dell Alienware, Inspiron, Latitude, XPS, and Precision systems equipped with RTC reset.

Current Systems:

Inspiron 15-3567
Inspiron 15-5567
Inspiron 7373
Inspiron 7460
Inspiron 7567
Inspiron 5577
Inspiron 15-5559
Inspiron 7560
Inspiron 14-3467
Inspiron 7472
Inspiron 5570
Inspiron 15-3552
Inspiron 7559
DELL G3 3579
Inspiron 5378
Inspiron 5370
Inspiron 15-3565
Inspiron 7572
Inspiron 15-3558
Inspiron 15-5558
Inspiron 7577
Inspiron 14-5468
Inspiron 3542
Inspiron 7570
DELL G7 7588
Inspiron 15-3568
Inspiron 15-3576
Inspiron 5557
Latitude 12 5280 Mainstream
Latitude 14 5480 Mainstream
Latitude 15 5580 Mainstream
Latitude 12 7212
Latitude 12 7280 Ultrabook
Latitude 12 7285 2-in-1
Latitude 13 3380
Latitude 11 3180
Latitude 11 3189
Latitude 12 5289 2-in-1
Latitude 12 5285 2-in-1
Latitude 14 7480 Ultrabook
Latitude 14 3480
Latitude 15 3580
Precision 15 5520
Precision 15 3520
Precision 15 7520
Precision 17 7720
XPS 13 9360
XPS 13 9365 2-in-1
XPS 15 9560 (Kaby Lake CPU)

Latitude systems with Self-Heal Option

Additionally all Latitude E1 to E3 Series Notebooks support the Self-Heal Option and the following E4 to E7 Models as detailed in this video:

E4 - Self-Heal Only, NO RTC Reset
Latitude 6430U
Latitude E6230
Latitude E6330
Latitude E6430
Latitude E6430 ATG
Latitude E6430S
Latitude E6530
E5 - Self-Heal Only, NO RTC Reset
Latitude 3340
Latitude 3440
Latitude E5440
Latitude E5540
Latitude E6440
Latitude E6540
Latitude E7240
Latitude E7240X
Latitude E7440
E6 - Self-Heal Only, NO RTC Reset
Latitude 3150
Latitude 3160
Latitude 3450
Latitude 3550
Latitude 5250
Latitude 5450
Latitude 5550
Latitude 7350
Latitude E5250
Latitude E5550
Latitude E7250
Latitude E7450
E7 - Self-Heal Only, NO RTC Reset
Latitude 7370
Latitude E5270
Latitude E5570
Latitude E7270
Latitude E7470

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Article ID: SLN304892

Last Date Modified: 09/10/2020 02:10 AM

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