When loading a sonar file the file appears to load then the screen blanks out and eventually causes the PC to restart.
I have tried doing a reinstall/repair to no avail.
This is the first try to use Reefmaster Sonar Viewer since changing computers.
What can I do to fix this problem?

Ps I use Windows 10 Home

It is possible that you do not have the hardware graphics compatibility required to run the sonar viewer, although we have never seen an issue where the entire PC locks up as a result - usually the sonar viewer itself stops.
To help us diagnose the problem further, could you please run the Windows untility dxdiag (Windows Run command, type "dxdiag" and return). Please use the "save all information" command and send the resulting file to This email address is being protected from spambots. You need JavaScript enabled to view it. .

Did you get my email with the "dxdiag" file attached?

Hi,
Yes I did, thanks. I did reply to your email at the time, did you not receive it?
I will look at your file this week and get back to you with an answer.

Hui Matt,
No, I didn't get your email reply
Mike