If so, set the boot order to the optical drive first, then boot with the CD in the drive.
Since you told nothing about make and model, only you know how to enter the BIOS. Read the owner's manual for the proper key/s to press on first boot up to enter the BIOS.
Start up the pc and just get a screen that says missing msconfig file. I tried to boot up in safe mode and tried all of the options there but can get past this error that I am missing msconfig file. I got the restore CD from dell and put it in the cd drive and booted up the pc but nothing happened. I am not sure if I just need to go get a new pc or this can be fixed??? Thanks for any help