tpupfan21

I have a Poulan Pro that I bought from my uncle last year that's 5-10 years old.  I've used it a few times this year with no troubles.  Pulled it out yesterday and plugged it in to use the electric start and am having some trouble.  When I push the button, the electric start makes a high pitch whining noise but it doesn't seem to be engaging the engine at all.  The engine isn't even trying to turn over.  Tried to pull start and that's completely stuck.  Not moving at all.  Could it just be frozen up or is it something more serious?  Thanks.