Windows 7 can standby automatically while full scan is running

It doesn't happen in Windows XP, but in Windows 7, while the full scan is still running, the system can standby automatically after 20 mins idle. I need to press any key or move the mouse to activate the system.

 

NIS 2010 ver 17.5.0.127 - Windows 7 x64 Ultimate.

If it is in Windows XP, when the "Full System Scan" is running,  NIS will stop OS stand-by and keep the system running before NIS finishs "Full System Scan". But now in Windows 7, NIS doesn't stop it. System will stand-by automatically after it is idle in 20 min(I set in energy settings), and "Full System Scaning" will be paused.

By Full System Scan do you mean the automated idle full system scan, or did you run a manual one?

It is the manual one, and I had scheduled a task to run Full System Scan regularly, so Full Idle Scan is closed automatically.

It doesn't happen in Windows XP, but in Windows 7, while the full scan is still running, the system can standby automatically after 20 mins idle. I need to press any key or move the mouse to activate the system.

 

NIS 2010 ver 17.5.0.127 - Windows 7 x64 Ultimate.