Only RAM is good in the above specs that you shared.
Graphic card is like nothing.
Lightroom needs at least 1024 MB of VRAM where 2048 MB is recommended.
Machine is really a issue here.
Can you share the crash report ?
How do I do that?
MediaCoreIF.DLL is a critical file for LR.
The first thing I would suggest would be to remove LR and install a fresh copy. The to be extra precautions, rename your Preferences file to force LR to build a new one.
Other observations possibly related to the error:
Malware may have infected the file.
You may be having video card driver conflicts. Install the latest video driver for your system Or if you recently updated the video driver, roll back or an earlier version.
System registry entries may be corrupt.
You might have several versions of MediaCoreIF.DLL installed by different apps and LR is picking up the wrong version.