Computer trouble sign forgot passcode to sign in

[Bearsnicker]

I had this computer for while until I find this to put back on, but missing adapter for plug in and no mouse with  only I have computer and keyboard… I have been struggling to sign in to open up screen, as I forgot what was passcode to sign in.. need to reboot to start over as fresh… last time I did use computer back in feb, 2019,  been long time…I do not have plug in the computer to the wall….. I lost the adapter for it .I am hard of hearing and I can not hear on the phone . Thanks for yr time  my email address is bearsnicker**bleep** 

[Hawks_Eye]

Hi @Bearsnicker 

Welcome to the HP Support Community!

Thanks for posting your query! We're here to help you get back up and running.

Since your HP All-in-One hasn't been used since 2019 and you’re missing the adapter, getting it powered up is the first priority. Here’s what you can do:

1. Get a Compatible Power Adapter

• The HP All-in-One - 20-c023w typically uses a 65W or 90W power adapter with a 7.4mm barrel connector.
• You can find a compatible replacement from HP’s official store or reputable sellers online.
• If buying third-party, ensure the voltage and wattage match exactly.

 

2. Reset Forgotten Password (Once powered up)

Since you can’t remember the password, you’ll need to reset the system:

Option 1: Reset via Password Recovery

• If the PC is linked to your Microsoft account, go to Microsoft’s Password Reset.
• Follow steps to reset via email or phone verification.

Option 2: Hard Reset (Fresh Start)

• Power on → On the login screen, click Power → Hold Shift and click Restart.
• Select Troubleshoot → Reset this PC → Remove Everything.
• This will wipe the computer and start fresh.

 

3. Mouse Replacement

• Any standard USB or wireless mouse should work. If you prefer HP-branded, check their store for compatible models.

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Take care, and have an amazing day!

Regards, 

Hawks_Eye