how do i reboot my ibm laptop

By reboot cd you mean a install cd.

Have you first tried to fix your computer?
Do you have any security s/w installed?

See if you can go into safe mode with networking (usually press F8 on startup) then see if you can try get s/w like this

AVG or Avast (free antivirus). If you already have antivirus then do not install another version.

Malware Bytes for a good spyware removal There is also Spybot and Adaware.

You also need a firewall. I use comodo (freebie) but zone alarm I think is still available as a freebie.

Install s/w that you need then run in safe mode.

These are the first steps

Thanks the author, very useful advice.
my pc often freeze too, which always drive me crazy, I want a program to solve my slow computer, several days ago my friend recommend me a software