khaled07 is very new here.
Welcome to CH, the best place to get free advice.
About registers and caches.
Neither registers nor chases are available to the general user.
There is a command to clear the DNS chance, but it now is almost useless.
If you think the motherboard is not working well, you will need to read over the documents t for your computer. Each m,motherboard is a little different.
Can you describe any problems you have with your computer?
What make and model number?