blue screen scanning registry

[Pegasus \(MVP\)]

What is the difference between running regedit in normal mode vs safe
mode?

None. However, you might have some tasks, services or drivers active in
normal mode that are unstable and cause problems.

 

[santashelper]

How can I explore this possibility for a remedy?

None. However, you might have some tasks, services or drivers active in
normal mode that are unstable and cause problems.

 

[Pegasus \(MVP\)]

You have already explored the rogue program/service issue with msconfig.exe.
Identifying rogue drivers is much harder - you would have to locate and test
generic drivers one at a time. But perhaps it's none of the above and your
machine has been somehow corrupted. If this was my machine then I would now
stop chasing this problem and do this instead, one step at a time.
1. Use System Restore to drop back a week or two.
2. Restore the machine to the most recent image (if available)
3. Perform a Repair installation.
4. Perform a new installation.

Steps 2..4 may require a full file backup/restore (including your EMail
files!)