Reinstalling when rebooting

[stuart.greig1978]

Looking for some help from anyone with more knowledge of pfsense if possible.

My issue is when i reboot my pfsense box instead of rebooting it tries to reinstall and brings me to setting up my VLAN, WAN & LAN etc. interface again.  Only way i can get round it is by a hard reset.

I'm running pfsense off an old intel 80GB SSD i had.  In BIOS sata was set to IDE and i changed it to AHCI but has made no difference.  Im running version 2.3.4.

Any ideas how i could sort this?

Thanks