Our 3D CAD supplier models have been moved to 3Dfindit.com, the new visual search engine for 3D CAD, CAE & BIM models.
You can log in there with your existing account of this site.
The content remains free of charge.
No display or affected display
Open the Options menu via Extras, Settings... and then open the 3D view dialog box.
Check the Software rendering option button so that the 3-D display is "software-driven" (Open GL, Windows). This is because Software rendering provides a reliable display mode which may sometimes not be so "demanding".