adamt

You can still find Office 2003 SP3 at the MS update catalog site. You might also want to make sure that Windows 10 has the latest available servicing stack update.

Usually, with an expired password, you would still be able to login, but you'd be prompted to change it.

Are you sure the password is still blank? Could somebody have changed it? Once you get back in again, check your security log for event ID 4738.

On the HP ProLiant SmartArray devices I have used, the cache is disabled when the battery loses charge or registers a fault. This is done to prevent the loss of data in the event of a power outage. It's easier for HP to support a disk performance issue that they can just tell you to replace the battery for, than it is to recover a corrupt database. When the battery fails, or has no charge, event ID 1206 from Storage Agents will be logged to tell you about the battery failure. Event ID 1204 will also be logged to tell you that the cache accelerator module has been disabled.