Start render showing 0s

Hi,
We have installed private instance of WPT and ‘start render’ was showing some numbers (very high though) but currently we see ‘start render’ showing 0s for all our tests (we have not changed any settings of WPT)…please let me know what could be the reason?

You need to make sure that the desktop isn’t locked so that video and screen shots can be captured (display set to never sleep, no screen saver, etc).