Can’t access hard drive

I just re-imaged a laptop for an incoming user, and have been installing the standard organizational applications. I was about to install Norton antivirus from the server when i got an error msg that said i didn’t have enough space on the hd. When i went to access the hd i got an error msg that said it’s not accessible. Upon reboot, i got a msg that referred to ‘paging’. New tech, help!