help needed urgent topic

hi i just flashed i and updated to the lastest twrp which went well then i flashed the boot.img for aicp kk and did a backup of my rom as i was going to update to kitkat but the backup failed i then went to hboot to reflash the boot.img to my original rom so i could boot my phone up to free some space on my sd card to try again but suddenly my pc started installing the drivers after which my pc rebooted after it settled i went back to my phone and hboot woulnt responed so i hard rebooted my phone and now it just keeps rebooting i try to go to hboot and it just carries on i dont know what to do if anyone can help i would really apprecite it thank you