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Michael WiseAug 28, 2025
Why does my Dell OptiPlex 5090 Small Form Factor Desktop say 'CMOS checksum error'?
- MMatthew VaughnAug 28, 2025
This message indicates that the RTC is reset, and the BIOS Setup default has been loaded.
Why does my Dell OptiPlex 5090 Small Form Factor Desktop say 'CMOS checksum error'?
This message indicates that the RTC is reset, and the BIOS Setup default has been loaded.
What to do if my Dell Desktop has no POST/No Boot/No Power?
If your Dell Desktop is experiencing a No POST, No Boot, or No Power situation, press and hold the power button for 25 seconds.
What to do if no memory/RAM is detected in my Dell Water Filtration System?
If your Dell Water Filtration System isn't detecting memory/RAM, first ensure the memory module is properly installed. If the problem continues, you may need to replace the memory module.
Why is licensed content not accessible in MediaDirect on my Dell Desktop?
Dell MediaDirect cannot verify the Digital Rights Management (DRM) restrictions on the file, so the file cannot be played.
What to do if my Dell OptiPlex 5090 Small Form Factor CPU has failed?
Run the Intel CPU diagnostics tools. If the problem persists, replace the system board.
How to fix 'Memory Address Line Failure' on my Dell OptiPlex 5090 Small Form Factor?
A memory module may be faulty or improperly seated. Reinstall the memory module or, if necessary, replace it.
What causes power rail failure on Dell Desktop?
If your Dell Desktop experiences a power rail failure, it means that EC ran into power sequencing failure. If the problem persists, replace the system board.
What to do if my Dell OptiPlex 5090 Small Form Factor has Flash corruption detected by SBIOS?
Flash corruption was detected by SBIOS. If the problem persists, replace the system board.
What to do if hard-disk drive controller failure 0 on Dell OptiPlex 5090 Small Form Factor?
If your Dell Desktop displays a 'Hard-Disk Drive Controller Failure 0' error, shut down the computer, remove the hard drive, and boot the computer from an optical drive. Then, shut down the computer, reinstall the hard drive, and restart the computer. If the problem persists, try another drive. You can also run the Hard Disk Drive tests in Dell Diagnostics.
Why does my Dell Desktop say time-of-day clock lost power?
If your Dell Desktop displays 'TIME-OF-DAY CLOCK LOST POWER', connect your computer to an electrical outlet to charge the battery. If the problem persists, try to restore the data by entering the System Setup program, then immediately exit the program.
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