Assalamo alaikum.

Im using x86 pc routerbord os 5.20 ... when I reboot the router its stuks on rebooting gave the message

Rebooting....
Stoping services....
Restarting system....

Then nothing happen im woried about it after this... I need to pluged out the power to and repluged the power to start server again ... plz help me to solve this problm .. im using dell workstation 690 pc .... and problm same when I press Alt+ctrl+dlt buton ...

I reinstal the router but same while I instal window 7 its works I mean Alt+ctrl+dlt wirks and restart the pc ... after that I instal again router os but same problm ... plzz help me out I also update the bios of pc....

Thanks

It might be a simple BIOS setting - might check and see if you have PNP or similar activated.

Also - I noticed your using an older version of RouterOS 5.2
There are a large number of advantages to utilizing the later versions -
Mind letting us know a bit more about your setup?

What system / motherboard etc ?

Did you get this figured out?

my pc is dell workstation dell precision 690 .

and where i can chek pnp ?

and one thing more i instal window 7 on it then its works fine men accept Alt+Ctrl=Dlt comand but not rebot on mikrotik