This system is NOT Windows-11 compatible.  Microsoft support (security updates and such) will cease for Windows-10 in October 2025.  That means important security updates will no longer be available, leaving this computer vulnerable to malicious viruses and hackers.  Now, I think the problem is that Windows-11 utilizes a piece of hardware/software called a TPM module.  This computer ships with a TPM module, however it has the old software inside the module.  There are sites, including the HP site that says the module can be update to the necessary specified version... but so far ALL attempts have failed.  Yes, there are work-arounds to "trick" Windows-11 to work without a working TPM module, but that is certainly not ideal.  These computers appear to be  NOT simply "refurbished", but older systems being marketed as current refurbished computers.  The BIOS (software that makes the computer start and operate), is dated 2016.  The price was right, but I still feel mislead about the state of the computer.  The computer I was sold/shipped is working fine on Windows-10, but it appears it will be a throw-away in about 2-years.  I wish I had known that before the purchase.