I believe it is a pretty common situation students face in the job market.
Last semester, I applied to a dozen of companies for internships. I got a few offers, and currently spending this summer at one of those offers. But, I wish I could have got into one of the companies I missed.
Now, I will be graduating in upcoming fall semester and need to start looking for full-time offers. Will my not-so-good performance in internship interviews lead to an outright rejection (not even interview is offered) for full time positions? If there is slightest possibility of this happening, how can I go about explaining my potentials and earn atleast interviews? How can I make sure that the companies judge me only by the full-time interview performance?
EDIT (Additional Clarifications): My university's fall career fair begins a little more than 5 months later the latest of those rejections. Will it be too early to apply for full time?
Will it be justified to contact the HR managers to figure out what went wrong? Shall I register with another email account on those job portals cause I am afraid they may still have my data.