SENS service BSOD on XP T60

[dvernb]

I'm frequently getting the BSOD on my T60 running windows XP.

When I reboot the event log shows the following error from Service Control Manager:
The Power Manager DBC Service service depends on the following nonexistent service: SENS

When I check there is no SENS service running but there is a sens.dll file under WINDOWS/system32.

Can anyone help please?