windows xp service pack2 error

When tring to load sp2 from cd ,It will load to the point when it says it is
creating restore point. Then i get a {Unable to read from or write to data
base}. I have tried 2 different cd's with the same results.

Help

Try:
Cryptographic service error
Error 0x800710D9 Unable to read from or write to the database
Look for fixdb.bat under "Error 0x800710D9 Unable to read from or write to
the database"
http://www.michna.com/kb/WxSP2.htm#C...Service_Pack_2