These fail/do not work, please read these:

HKEY_CURRENT_USER\Control Panel\Mouse
MouseHoverTime, 0

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer
BalloonTip

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
ExtendedUIHoverTime
ThumbnailLivePreviewHoverTime
BalloonTip



HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\TrayNotify
BalloonTip, dword, 1

HKEY_CURRENT_USER\Control Panel\Desktop
MenuShowDelay

1. How do i change the time that passes (delay/waiting) before the ToolTip/Infotip/Balloon appears? Very similar to MenuShowDelay, i want the speed of 0 (no delay)..

2. And how long it stays open?

Thanks... i had searched... but could not find an answer...

This may be the answer, but i tried searching initialdelay in regedit, but none.

ToolTip.InitialDelay Property (System.Windows.Forms)

The MouseHoverTime [400] and MenuShowDelay [150] are existing keys, but the others you mentioned for Explorer don't exist (I'm assuming you created them from some reference you read). I changed mine but did not see much of a difference, so I'm thinking a reboot is necessary. I find my desktop tool tips come up in about 0.5 sec, maybe a shade less. Tooltips in Explorer come up even faster, maybe 0.25 sec. That seems quick enough to me for most purposes.

If "0" makes absolutely no difference, it is possible that the value forces a default behavior. Try putting "1" or "10" instead.

Something else must be interfering with your system. My tooltips are coming up with nearly no lag (only very, very slight). You might want to try testing it out in safe mode to see if there's any difference without boot up services and programs loaded.