Alienware Area-51 Desktop – Persistent Low-Frequency Noise & Shutdown Issue Within First Month

Hi everyone,

I recently purchased a Dell Alienware Area-51 desktop  and within less than a month of usage, I've encountered two major issues. I’d appreciate any insights or suggestions from the community.

Issue 1: Persistent Low-Frequency Noise

• The desktop emits a cyclical low-frequency “humming” noise — something like “hmm... hmm... hmm...” — that sounds like vibration or resonance.

• This noise has persisted even after a fan replacement.

• It occurs even when the PC is placed in a completely open and ventilated area, so airflow blockage or case vibration seems unlikely.

• The noise only happens at low fan speeds. At high speeds, the fans are quiet.

• Dell's diagnostic tools report no issues with the fans.

• I have another identical Alienware desktop that does not produce this noise, so it doesn’t appear to be a design issue.

Issue 2: Unable to Shut Down (Post Fan Replacement)

• Before the fan was replaced, shutdown worked normally.

• After the replacement, the system powers off and then restarts automatically — it won’t stay shut down.

• BIOS and power settings have been checked and do not appear to be the cause.

Support Experience:
Although I purchased the Pro Support package, the technical support I’ve received so far has been heavily script-driven, with no real troubleshooting beyond repeating standard diagnostics.

Has anyone else experienced similar issues with noise or shutdown after a fan replacement? Any suggestions on how to resolve this would be greatly appreciated.

Thanks in advance!