Matlab busy, but nothing shows up

My Matlab version is 2013a, I have been using this version for a year now.

Recently, my matlab cannot run codes anymore. When I start to run, the commander window would show "busy" but nothing shows up.

I suspect the process was stuck somewhere in the beginning, how could one check that?

[José-Luis]

Have you tried starting in from the command line / shell?

Answer 1

[Mikhail]

I would simply reinstall matlab. Don't forget to save your codes.

[William]

I did that! But it didn't work.

[Joseph Cheng]

can you expand on what codes yours or any and all code? if you just typed in plot(rand(10)) would it plot?

[Mikhail]

I meant your own codes (just in case)

Yes, plot(rand(10)) works in my matlab

[Joseph Cheng]

i know yours work Mikhail. i was asking William if he can expand on what doesn't work in his matlab "code". Is it his codes (user created scripts + function + GUIs, etc.) or everything built in matlab stuff.

[Mikhail]

Or sorry, I thought it was author's comment