Precision 7680 and 7780 Installed with 128 GB CAMM Memory Modules Take Time to Complete Power-On Self-Test (POST)

Summary: This article provides information about the initial time to take for Precision laptops to complete POST after upgrading or reseating 128 GB Compression Attached Memory Module (CAMM) memory modules. ...

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Symptoms

Precision 7680 and 7780 may take longer to complete POST after upgrading or reseating 128 GB CAMM memory modules for the first time. When the memory modules are fitted, the keyboard LED lights up but nothing is displayed on the screen. There may also be no LED flash code displayed.

Affected Platforms:

  • Precision 7680
  • Precision 7780

Cause

128 GB CAMM memory modules have a longer POST time when first fitted.

Resolution

Wait for approximately 3 to 4 minutes for the initial memory initialization to complete. After this initial POST time has completed, the computer then boots up without issues on subsequent boots.

Affected Products

Precision 7680, Precision 7780
Article Properties
Article Number: 000236651
Article Type: Solution
Last Modified: 30 Sept 2025
Version:  2
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.