Need to force delete Reg Key

I have a Ricoh card driver that starts a service that is erroring on this install. I uninstalled in Control Panel (it's not listed in Services) but it left keys I was able to delete via a REgedit Search - except for one key which is still generating the error and may be running so it won't let me delete it.

Is there an easy way to force delete this? I tried Safe Mode. I can export the key but what editor do I use to mount and delete it and then will regedit let me reimport and overwrite the problem ControlSet PCI/VEN key?

Any ideas?

Code:

Log Name:      System
Source:        Service Control Manager
Date:          1/14/2014 4:03:02 PM
Event ID:      7000
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      AcerAspire
Description:
The Ricoh xD-Picture Card Driver service failed to start due to the following error: 
The service cannot be started, either because it is disabled or because it has no enabled devices associated with it.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" />
    <EventID Qualifiers="49152">7000</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8080000000000000</Keywords>
    <TimeCreated SystemTime="2014-01-14T21:03:02.921875000Z" />
    <EventRecordID>4360</EventRecordID>
    <Correlation />
    <Execution ProcessID="472" ThreadID="476" />
    <Channel>System</Channel>
    <Computer>AcerAspire</Computer>
    <Security />
  </System>
  <EventData>
    <Data Name="param1">Ricoh xD-Picture Card Driver</Data>
    <Data Name="param2">%%1058</Data>
  </EventData>
</Event>

There is no Ricoh card on this PC. The software was uninstalled but left the service and a driver rimsptsk which are erroring at every boot and may be slowing performance

. I can't find the Service, deleted the driver from Sys32 drivers folder but it still errors.

I have searched Process explorer for all parameters listed for the Reg key (below) to see what service is running it. Sometimes narrowing the process you can delete the Reg key by killing the process. But it doesn't respond to the Key or any other listing here searched:

Changed that value for rimsptsk. At reboot the Error is still there

Prob is this laptop has a Texas Instruments card controller driver in Dev Mgr and no other listed for its card slot. I think the Ricoh came from the machine I imaged onto here. I do want the card slot to be functional. How can I check?

Psiexec is not recognized when run as admin in CMD. Do I need another console? The second link?

So I need pstools download first?

On phone now, doing the regedit on laptop on freeway on way to deliver it (payment big Ital dinner)