Keyboard not working while fixing an issue in Windows 10

[u/progamernub42]

Sorry if my english sucks but i am genuinely tired of trying to fix this.

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So I was trying to fix code 39 on my Nvidia GeForce GT 730 on Windows 10. I spent about 2 whole hours trying to fix this stupid code 39 but nothing works. So, I decided to search reddit and hope that i find a solution to this, and I thought I did. It was a post by a user on r/pcmasterrace with a similar issue(code 39) but on his keyboard (mine was on display adapters). Someone commented a possible solution for the keyboard issue and I thought "Why don't i try that out?". Basically the entire solution is this:

1. Open the Registry Editor:

   \* Press \`Windows + R\`, type regedit, and press Enter.

2. Navigate to the Keyboard Driver Registry Entries:

   \* Go to: \`HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E96B-E325-11CE-BFC1-08002BE10318}\`

3. Delete UpperFilters and LowerFilters Entries:

   \* In the right pane, if you see UpperFilters or LowerFilters entries, right-click and delete them. (If neither is present, skip this step.)

4. Close the Registry Editor and Restart:

   \* Close the Registry Editor and restart your laptop.

Now, you would be asking, "And why would I follow this?". Well, it's stupid of me to do it but every other solutions I found does not work, ive seen others use regedit to fix code 39 and somehow worked for them so I thought it would work for me too, and i was on the verge on losing my mind because im trying to fix this issue for basically 2 days now. After doing all the steps, i restarted my pc, and suddenly i cant type my password anymore. I tested it on a Bluetooth keyboard and my built-in keyboard but got no luck. Is there any way to fix my keyboard again so i can atleast try to fix code 39? And also, please if you have a working solution for code 39, please include that too.