Default [Q] desire x problem

hi guys, im having a problem with my desire x. phone my keeps on rebooting, if its not rebooting its screen will go dark and i have to pull the battery out just to make it work again. and one more thing i cant flash a new rom on my device. please help me. thanks in advance. here is the link to my logcat: pastebin.com/2MtJWBwJ