How to avoid System lock while QTP is running

You can avoid the System lock by Following steps
1. copy & Paste below code in notepad
Dim WSHShell
Set WSHShell = WScript.CreateObject("WScript.Shell")
WSHShell.SendKeys "{NUMLOCK}"
2. Save as keypress.vbs file
3. Schedule in microsoft scheduler (Start> Controlpanel> Scheduled Tasks> Add Scheduled Task) map the .vbs file
4. Schedule for every 1or 2 min for Required hours...

OR
You need to ask System Admin to remove the autolock?

OR

Download and Install caffeine software.