You do it from your BOS setup, entered by hitting the appropriate key as
power comes on. See the machine's manual - often DEL but could also be
various Function keys, or maybe INs.
In that there are two common places
A BIOS Settings page, look for Boot Order, get down to it with the
down-arrow and then use PageDn to Cycle possibilities to get CD-Rom;C:.
Or, in a separate Boot page, select the CD Drive and use the number
keypad + to push it to the top.
Either way then hit ESC and go to Exit, Saving settings. Have the CD
ready in the drive so when it reboots after that it will boot the CD
(you will probably there need to hit a key to confirm that is what you
want to do - when the machine reboots during setup sit back instead, so
it boot the hard disk)
Either on entering Setup, after the license agreement take 'Repair',
which will retain installed software, data files and most settings, or
if you want to clean the disk off completely for a clean start take 'New
Install'. If you do that, when it asks where, hit ESC. Then select and
delete the partition where windows is, and make a new RAW one to be
formatted at the next stage. If you do not delete you are likely to
have a new install on top of the old, which gets very confused
Alex Nichol MS MVP (Windows Technologies)
Bournemouth, U.K. XXXX@XXXXX.COM (remove the D8 bit)