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Windows 10 very slow after reboot

This post has moved to eklausmeier.goip.de/blog/2020/11-13-windows-10-very-slow-after-reboot.

I repeatedly noticed that my Microsoft Windows 10 laptop is noticeably slow when restarted. This time I rebooted the laptop and just watched what happened in task manager. Below are the results.

Waiting for more than 10 minutes doing nothing: one third of the machine is loaded with managing its own.

Curious what might cause this obscene activity, noticed that “WMI Provider Host” consumes more than 10% of CPU:

Waiting again, i.e., laptop had 30 minutes to think by itself, now just changing my Windows password seems to be a big hit for the machine with eight CPUs:

It is important that I did not start any big program, like Google Chrome, or Outlook, or Excel, or anything else. The laptop had all cores for its own bureaucracy.

I restarted the machine during which time it told me to restart! I got this blue screen.

After reboot the same scenario as before. Then after 20 minutes the craze is over and CPU load is down to 6% CPU load.

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Re-installing Grub when MS Windows Destroyed It

This post has moved to eklausmeier.goip.de/blog/2013/09-29-re-installing-grub-when-ms-windows-destroyed-it.

I have now done it a couple of times, but always have to look it up. Here are the steps to re-install Grub from a live Ubuntu CD, when you have Windows and Linux on your hard disk. You must be root, or run these commands with sudo. Change /dev/sdaXY accordingly.

  1. mount /dev/sda2 /mnt
  2. mount /dev/sda3 /mnt/boot, if you have a separate boot partition
  3. mount -o bind /dev /mnt/dev
  4. mount -o bind /sys /mnt/sys
  5. mount -t proc /proc /mnt/proc
  6. chroot /mnt /bin/bash
  7. grub-install /dev/sda

Above commands are from method 3 in GRUB (in German).

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CUDA without X Window System

This post has moved to eklausmeier.goip.de/blog/2013/05-16-cuda-without-x.

Instead of starting X like

xinit /usr/bin/icewm

and therefore loading the NVidia CUDA environment, one can simply add

[ -c /dev/nvidia0 ] || mknod -m 666 /dev/nvidia0 c 195 0
[ -c /dev/nvidiactl ] || mknod -m 666 /dev/nvidiactl c 195 255

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