How do I find all existing values for registry?

I Am tweaking my system for minimum latency. I go to registry a lot. But I Am very careful and not doing any changes, which I don't understand. I usually find what value does, by googling it and find it on microsoft docs, or elsewhere. But sometimes I can't google it, or find it on microsoft docs! I tried to google this, but found nothing much.

Do you have any tips how to find all existing values, e.g. for specific registry key?

That would help a lot, thanks!

Ghot said:

If you are referring to all the changes made in the registry by say... installing a program, then you want a program like RegShot.


How to Use Regshot To Monitor Your Registry



The short version is... it takes a pic of your registry. Then after you DO something, like install a program, it takes another pic and compares the two... showing YOU what has changed.

No, I meant how do I find all registry values, which are available for specific key like:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power

What if it is not found on microsoft docs and google + bing finds nothing?

You can create here all these values, yet I couldn't find what they do each specifically:

Code:

ExitLatency -> 1
ExitLatencyCheckEnabled -> 1
Latency -> 1
LatencyToleranceDefault -> 1
LatencyToleranceFSVP -> 1
LatencyTolerancePerfOverride -> 1
LatencyToleranceScreenOffIR -> 1
LatencyToleranceVSyncEnabled -> 1
RtlCapabilityCheckLatency -> 1

Their purpose is to tell windows to stop tolerating high DPC/ISR latencies.