I tried to burn an ISO-with mentioned result. Videos are perfectly displayed. DVD is ok, as I burned the ISO on another notebook. The field right from "CD/DVD Burner" is empty. I searched the internet for this, used "Troubleshooting" in the "Control Panel"-no avail! Checked the "Device Manager", driver, seemingly ok. Many advices on the internet, what would be right method, step by step? System backup and a system repair disk I could not make, too. It is a HP Elitebook 8560w. For now I do not want to reboot the machine with an OS on a DVD, to check, if the OS will start, as I have to complete work at the moment.
Tech Support Guy System Info Utility version 1.0.0.9
OS Version: Microsoft Windows 7 Professional, Service Pack 1, 64 bit, Build 7601, Installed 20200501095946.000000+120
Processor: Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz, Intel64 Family 6 Model 42 Stepping 7, CPU Count: 4
Total Physical RAM: 16 GB
Graphics Card: NVIDIA Quadro 1000M
Hard Drives: C: 238 GB (164 GB Free);
Motherboard: Hewlett-Packard 1631, ver KBC Version 01.3D, s/n PCDJHB77V2H2D1
System: Hewlett-Packard, ver HPQOEM - f, s/n 5CB21350MS
Antivirus: None
Tech Support Guy System Info Utility version 1.0.0.9
OS Version: Microsoft Windows 7 Professional, Service Pack 1, 64 bit, Build 7601, Installed 20200501095946.000000+120
Processor: Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz, Intel64 Family 6 Model 42 Stepping 7, CPU Count: 4
Total Physical RAM: 16 GB
Graphics Card: NVIDIA Quadro 1000M
Hard Drives: C: 238 GB (164 GB Free);
Motherboard: Hewlett-Packard 1631, ver KBC Version 01.3D, s/n PCDJHB77V2H2D1
System: Hewlett-Packard, ver HPQOEM - f, s/n 5CB21350MS
Antivirus: None