Symptoms: Computer is an HP Model that suddenly blue screens and returns an error with keycrypt64.sys before rebooting.
Items Needed: USB Mouse, USB Keyboard, Windows Boot Disk or Utility Disk
Solution: A recent update push to Constant Guard (Comcast) has a conflict with the default keyboard / mouse dll for HP Machines. This is a temporary fix.
Step 1. Boot the machine using the utility boot disk to access a command prompt.
Step 2. Copy C:\windows\system32\drivers\hpqkbfiltr.sys to C:\windows\system32\drivers\hpqkbfiltr.old (THIS WILL DISABLE YOUR KEYBOARD AND MOUSE THAT ARE NOT USB)
Step 3. Attach the USB Keyboard and Mouse plugged into a side port and reboot the laptop. Windows should boot normally.
Step 4. Once logged into windows, go to control panel, add/remove programs and remove Comcast Constant Guard
Step 5. Reboot and use the USB Keyboard and mouse to rename C:\windows\system32\drivers\hpqkbfiltr.old to C:\windows\system32\drivers\hpqkbfiltr.sys
Step 6. Reboot, unplug USB Keyboard and Mouse, computer should be running fine..
Special Thanks to Bob Bailey for posting this solution for the community!
Hey, thanks for the information! I ran into this issue for a client today and got them back working pretty quickly using a Hiren’s Boot CD to access and rename the .sys file mentioned above.
Unrelated, I created a post on my site linking back to yours. However I noticed afterwards that in the top left corner of your website, there is a link to “best online casino” (onlinecasino-games.com). Is this intentional on your part? If not, I simply wanted to post a heads up to the added link in your code!
Best regards,
–Jason
Jason,
Thanks for the heads up, looks like it was a plugin from the wordpress site that was replicating the link. Thank you for pointing it out.
Regards
Thanks for this info. You were the first result when I did a Google search for “disable keycrypt64.sys” and everything worked great.
Thanks, This was a great help.