T420 Display turns off after 60 seconds of idle

[fastmessenger]

I have adjusted the power settings in Lenovo's Power Manager 6 and in the Windows 10 settings for AC power and still the display turns off after 60 seconds. So the display should wait 15 minutes before turning off since I have it connected via the AC adapter. I bought the laptop on Ebay and the seller said he installed a new 1600 x 900 display which is not the original 1366x766 display. Could he have improperly installed it?

[lembang]

As far as Im aware of the Power Manager is not supported in Windows 10 anymore. I believe you did an upgrade on it?
but try with windows power manager control. See if that works. I'm not a windows user with thinkpad anyway. But worth a try this is my experience with my other laptop.

[fastmessenger]

I ended up re installing windows 7 with the recovery discs i made. that fixed my issue with the display. Now I have other issues. See my new post.