HP dx2400 desktop with Win!0pro failing to start

[CurtW2]

One of my 2 HP Compaq dx2400  Microtowers  with Win10 Pro installed  is not starting up

[Hawks_Eye]

Hi @CurtW2 

Welcome to HP Support Community!

We noticed that this thread hasn't had any updates in a while since your original post; while this is rare, we didn't want this post to remain unanswered, so, here's the solution to your query. We hope it helps you and everyone viewing this post 😊

Thanks for sharing that — let’s try to bring that dx2400 back to life step by step. Since it’s not starting up, we’ll begin with the basics and work our way up:

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🔌 Step 1: Power Reset (Hard Reset)

This clears any residual power and resets hardware states:

1. Turn off the PC and unplug the power cable.
2. Press and hold the power button for 15–20 seconds.
3. Reconnect the power cable and try turning it on again.

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🧪 Step 2: Check for Signs of Life

• Do fans spin? Any lights or beeps?
• If no signs of power, try a different power cable or wall outlet.
• If fans spin but no display, move to the next step.

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🖥️ Step 3: External Display Test

If you suspect a display issue:

• Connect the PC to a different monitor or TV using VGA.
• Make sure the monitor is set to the correct input source.

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💾 Step 4: BIOS Access

Try to enter BIOS:

1. Power on the PC and immediately tap Esc repeatedly.
2. If a menu appears, press F10 to enter BIOS setup.

If you can access BIOS, the hardware is likely okay and the issue may be with Windows.

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🧰 Step 5: Bootable USB Recovery

If BIOS works but Windows won’t load:

1. On another PC, download the Windows 10 Media Creation Tool from Microsoft.
2. Use it to create a bootable USB drive.
3. Insert it into the dx2400 and boot from USB (press Esc > F9 to select boot device).
4. Choose Startup Repair or reinstall Windows if needed.

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Let me know what the PC is doing when you press the power button — no lights, stuck on logo, or something else — and I’ll guide you from there. We’ll get it sorted!

Please mark this post as “Accepted Solution” if the issue is resolved, and if you feel this reply was helpful, click “Yes”.

Thanks for being part of the HP Community!
Hawks_Eye