Q: NB : Out of frequency HF: 56.4 khz VF: 60 hz Operating frequency HF: 30-54 khz VF: 50-120 hz Power management 14s After that the screen will shut down even though the CPU still on
A: You need to boot your computer into safe mode (press F8 before the Windows loading screen appears). Right click on your desktop, go to Properties - Settings tab. Click Advanced - Monitor tab. Screen refresh rate - 60 Hertz. Check the box that says "Hide modes that this monitor cannot display." Click Ok. Reboot, and you should be fine.