HWID Ban

I am actually not sure if it helps for CoD but back in the days from Combat Arms there was a free "Hard Disk Serial Number Changer" that did the magic for me, without reinstalling Windows or any other bullshit rather just a few simple clicks + reboot. You can still download it on "Softonic", but i cant guarantee anything.
In the program you can just select the drive with your installation change the Serialnumber to a random number that isn not used by any other and after a reboot you should be good to go.
You can also double check if it really changed your HWID over your console ('cmd.exe'). Just select the drive with e.g. 'C:' than type 'dir'. The secound line will show you the current HWID of drive.

how do i do change ip

CHANGE YOUR IP ON YOUR ROUTER, OR CALL YOUR INTERNET PROVIDER

Turn your Router / Modem off for 5 mins, then turn it back on, if it doesnt change call your ISP and say that your blocked on many different websites or games, just make something up

Happened to me as well. Was able to fix this by getting a new hdd for just $40.

i got a hwid ban on warzone and been looking to figure out what parts i need to replace on my pc.. was your hdd all you had to replace? and how long ago was your ban mine was like a week or 2 ago.

Your best bet is to get a new cheat with hardware spoofer!

Learn to either trust a random site for a spoofer, or learn how to make one yourself. I also advertise for a small company that has something called a Cleaner, which is what you are trying to do.

If you have been shadowbanned, you can clear your trace files like suggested above, including the Blizzard MW folder, Registry Editor changes, alongside changing your MAC addresses.

If you have been permanently HWID banned, you would need to learn how to change your BIOS information for your motherboard, change your PC name, and change your SSD/HDD IDs to a persistent spoofed state.

there are a few diff parts that have I.D. numbering that can be used to ban a play main ones are hard drives/ssd(solid-state-drives)/ cpu and motherboard...they are the easiest to quickly recognize by an anticheat system to tell the server to keep you out of the active game...i changed out an ssd one time that i was caught slipping lol....your HDD or SSD are your main go to if you catch a ban

You need to get an HWID spoofer, it's the only way to get around this.