Cannot log into Windows XP

[Guest]

Windows XP starts up and presents me with press CTRL-ALT-DEL to log in

Apply valid username and password and observe system loading personal settings

Receive the message "Your system has no paging file, or the
paging file is too small ........." with various instructions about
increasing the size of the page file etc...

Only problem is that the system then proceeds to log off immediately and
there is no opportunity to set the page file size

The username and passwords are all OK, result is the same for administrator

Booting into command console and running chkdsk on the drive correct some
errors on the drive

Any suggestions on how to get into the system

Hardware is relatively unimportant as XP has been running in a stable manner
on the same machine for some time now

Thanks to anyone who can help me solve the problem

 

[Rich Barry]

Next time you start up try tapping F8 until you get a Menu. Select
Safe Mode and if XP boots up Ok then rt click on
MyComputer>select
Properties>Advanced>Performance-Settings>Advanced>Virtual Memory-Change. You
can set
your page file from there. I have 512MB of Ram and set my page file to
800 Min 800 Max. I never use more than
200MB of pagefile.