Blank after processing

Hi I have just downoaded a trial of DxO Pureraw and after processing the photo is blank?

One thing to check is whether you have it set to “Auto” or “CPU” for the graphics card setting. If it is asked to use an incompatible graphics card, unusual output can occur. It won’t complain, it may just produce blank or otherwise corrupted images.

Hi I tried all options and after processing DxO still is blank on the thumbnail.

How do I check please and which one should I use auto or cpu

The setting is one of few available in the app. See here.

Generally speaking if this is the issue, setting it to CPU should cure it, as it is unsupported graphics cards that can be problematic. If you’ve tried it on CPU and still get a blank image, then this is not the problem.