Matlab Error: graphic

Hi everybody,I was running simulink, but after some second my pc stucked. Then I shutted down the pc brutally. When I opened Matlab, I saw the following warning:

 Warning: Initializing MATLAB Graphics failed.
This indicates a potentially serious problem in your MATLAB setup, which should
be resolved as soon as possible.  Error detected was:
MATLAB:load:unableToReadMatFile
Unable to read MAT-file
C:\Users\cecch\AppData\Roaming\MathWorks\MATLAB\R2017a\matlabprefs.mat. File
might be corrupt. 
> In hgrc (line 163)
  In initprefs (line 11)
  In matlabrc (line 137)

What should I do?

Answer 1

[Walter Roberson]

I recommend deleting C:\Users\cecch\AppData\Roaming\MathWorks\MATLAB\R2017a\matlabprefs.mat . After that you will need to go in and reconfigure any preferences you had changed, such as how things dock, or hot-keys, or which warning messages you want the automatic syntax checker to look for.

[dario cecchetti]

Thank you very much

[Hongyi Gao]

It works! Thanks a lot!

[yash Morar]

how do you go about deleting this file?

[Walter Roberson]

You should be able to delete anything under your AppData\Roaming directory. If you cannot, then your system administrator has locked it down and you might need to get your administrator to delete it.Though I suppose that in some cases where you used Run As Administrator the first time you used MATLAB, the file could have ended up owned by Administrator.

[naohachi norabuena kuroda]

thanks crack

[Prince Ogbodum]

I can't seem to find the folder Appdata, what might be wrong??

[Walter Roberson]

If you still have a working-enough MATLAB, then give the command

prefdir

to find the name of the directory.

https://www.mathworks.com/help/matlab/ref/prefdir.html