media not playing in preview

I've been using Da Vinci Resolve (free) for about 2 years.
I recently purchased amd Ryzen Pro 4650g and tried to use DaVinci Resolve.
Even videos(1280X720) with H.264 codec cannot be played in preview.
The audio is played, but the video is flickering or broken.
The BIOS version of the board is also the latest
I also installed the latest chipset driver version.
Other video editing programs work normally. (Eg lightwork, vsdc video editor)
Other programs are difficult to use because DaVinci Resolve is familiar.
Please help.
my info : https://1drv.ms/u/s!AgwKBZd5NfbxhYlyyDb ... Q?e=hYzzhc
screenshoot : https://1drv.ms/u/s!AgwKBZd5NfbxhYokiGD ... g?e=b44BI4
I recently purchased amd Ryzen Pro 4650g and tried to use DaVinci Resolve.
Even videos(1280X720) with H.264 codec cannot be played in preview.
The audio is played, but the video is flickering or broken.
The BIOS version of the board is also the latest
I also installed the latest chipset driver version.
Other video editing programs work normally. (Eg lightwork, vsdc video editor)
Other programs are difficult to use because DaVinci Resolve is familiar.
Please help.
my info : https://1drv.ms/u/s!AgwKBZd5NfbxhYlyyDb ... Q?e=hYzzhc
screenshoot : https://1drv.ms/u/s!AgwKBZd5NfbxhYokiGD ... g?e=b44BI4