Is it the software that you cant logon or the PC? For Agilent bundled PC that would have shipped with the GC, if nothing has changed, the default logon is user:admin, pw:3000hanover.
If this is an Openlab issue, or other software issue, please call your local support for help. Contact Us | Agilent
I will mark this as assumed answered due to its age. If you are still having problems, feel free to post again.