computer turns on and does 3 long beeps, and 2 short beeps

[Jayedell96]

I have a OMEN by HP 45L Gaming Desktop GT22-0465xt . 

I recently tried to upgrade my CPU from an i7- i5. I was told that I needed to upgrade my bios to atleast F.80. Which I did. Booted up my computer and it worked fine. I then went to swap out my I7 to the I5 and it started beeping. 3 long beeps, 2 short beeps. I then switched back to my I7 and the same beeps are happening. I looked it up online and it says it a memory problem. I tried taking my ram out and putting it back in and that also didn’t work. I don’t understand how a simple update would have done this to my computer. Any help would be greatly appreciated. And yes, I did update the bios from the HP website. 

[VikramTheGreat]

Hi @Jayedell96,

Welcome to the HP Support Community.
 

Thank you for posting your query. I will be glad to help you.

Thanks for the detailed background. This is a tricky but not uncommon issue after a BIOS update and CPU swap on HP OMEN desktops.

Beep Code Meaning: 3 Long, 2 Short

This pattern typically indicates a memory initialization failure. Specifically, HP documentation and community responses suggest:

“The embedded controller has timed out waiting for BIOS to return from memory initialization.”

What Likely Happened

• After updating to BIOS F.80, your system initially booted fine with the i7.
• Swapping to the i5 may have triggered a firmware-level memory remapping or timing issue.
• Now, even reverting to the i7 doesn’t help because the BIOS is stuck or corrupted in how it initializes memory.

Steps to Fix

1. Perform a CMOS Reset

• Power off and unplug the PC.
• Open the case and remove the CMOS battery (a coin-cell battery on the motherboard).
• Press and hold the power button for 30 seconds.
• Reinsert the battery, plug in, and try booting again.

2. Try BIOS Recovery (Win + B Method)

• Plug in a wired USB keyboard.
• Hold down Windows key + B, then press and hold the power button for 2–3 seconds.
• Keep holding Win + B until you hear beeps or see the screen flash.
• This may trigger BIOS recovery mode.

3. Reseat or Test RAM Modules

• Remove all RAM sticks.
• Insert one stick at a time in the primary slot (usually DIMM1).
• Try booting after each change.
• If you have upgraded RAM recently, try the original factory RAM if available.

4. Check CPU Compatibility

• Double-check that the i5 CPU you tried is officially supported by your motherboard and BIOS version.
• Some i5s may not be compatible even if they share the same socket.

I hope this helps.

Take care and have an amazing day!
 

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Regards,

VikramTheGreat