Need to give more computer information as per AMD Forum: INFORMATION REQUIRED WHEN POSTING A QUESTION
Are you using Windows or Linux? What version of Windows or Linux?
Make & Model of Motherboard, GPU card installed, Ram installed, or Laptop.
Which version of Solid Works do you have installed?
Solid Works System Requirement: SOLIDWORKS | Hardware & System Requirements | SOLIDWORKS
Solid Works Certified GPU Cad Requirement: Graphics Card Drivers | Hardware & System Requirements | SOLIDWORKS
Solid Works Download of new versions, service packs, and add-ins : Downloads | Support | SOLIDWORKS
The only reason I linked all those Solid Works pages is just to make sure you have the latest version and packs or add-ins to the version you have installed plus to verify you have the correct requirements to run Solid Works on your PC.
Here is the latest AMD APU Driver for the Rzyen 2400G : AMD Ryzen™ 5 2400G Drivers & Support | AMD
It is possible that the Ryzen 5 2400G is not compatible with Solid Works program if you don't have a Certified GPU Card installed and just using the Integrated Graphics on the 2400G.
According to this User at Tom's Hardware Forum, the Ryzen 2400G is comparable to a GTX 1030 GPU card. Don't know how accurate this info is thought: Best graphics card for Ryzen 2400G - [Solved] - Graphics Cards
The Ryzen 2400G includes integrated graphics which are roughly equivalent to an Nvidia GTX1030. In comparison, this is about 2 - 3 times better than Intel's integrated graphics. If you buy this APU, you don't need a discrete graphics card (for low end gaming). If you want to step up, a Ryzen 1400 or 1500X provides similar CPU power (and no integrated graphics) and then add a GTX1050Ti GPU