So I have Houdini 14 Apprentice and I have been using it for about 6 months now and haven't had any problems until now. I have an ASUS IntelCore i7-4790 processor and NVIDIA GeForce GT740 4GB computer that I use. I tried opening my .hip file(which I have always used this computer for), and got an OpenGL Fatal Error: the OpenGL driver is not able to run OpenGL 3.2.

How is it that I am getting is error now??? I haven't ever had problems opening this file before on this computer. Any help would be appreciated.

My guess is that either it's trying to start Houdini on the iGPU rather than the NVidia discrete GPU, or that the driver was updated since you last ran H14 (perhaps automatically?)

What the error message means is that the driver was unable to create a GL3.2+ context for Houdini, which might indicate it's resources are exhausted or the driver in question can't fulfill the request.