Re-installation of Windows XP

[gryppetype]

My system seems to have been corrupted, so that I cannot get onto the Net via e.g. IE or Firefox, although the system itself IS connecting to the internet, downloading XP updates from time to time. There are some others 'oddities' e.g. Disk Defrag will not run.
I think I need to re-install Windows XP, but do not have any software CD/DVDs (system delivered pre-installed, and with no Recovery CD).
How can I obtain a re-issue of XP? (I can quote licence key to whoever).
Is this a Sony or a Microsoft support issue?

[rich912]

Hi gryppetype,

Your notebook should have come with either a hard drive recovery partition, from which you can create your recovery media or restore to factory defaults (via Vaio Recovery Centre), OR a set of recovery disks.

If you let us know the model then we will be able to advise you better.

EDIT: I have just noticed Thalamus's reply to you identical post HERE . Please only post once.