so, i rooted my evo 4g lte using the regaw method which also loads twrp. i had decided i was going to take a risk and mess around with loading some roms on my phone (something i have never done with any of my previous rooted phones) i would just root so i could use wifi tether and other little things, but never loaded any roms. so, i take a risk and download the viper rom, no problem, worked great, made some backups of my stock and viper and proceeded to try the cyanogen 10 jellybean mod. had to use flash image. gui to extract the kernel and load it seperate, then proceeded to flash the cm10 jb rom. all worked well, but i decided i didnt like it as much as viper, or even my stock roms for that matter. here comes the problem. it wont let me flash back or even restore any of my other roms. i was pretty sure it was because i had the wrong kernel, so i flashed the stock kernel and that went good, but now all i get is an error message E: Unable to mount ' /sdcard' and the same for internal storage. when i reboot it looks like its going to load my stock rom but gets to the htc beats audio screen and thats as far as it will go.....then infinite boot loops. im really sorry for being a noob, but ya gotta start somewhere i suppose. i really hope someone can help out with this!! thanks ya'll.