my bb z10 wont boot just red led lights how cn i fix it?

hello there i have a bb z10 so it recently gave me the error 015.. i went thru various forums and i even tried to update via link but it didnt work so i resorted to the use of autoloaders i have since then used a number of aoutoloaders but the result is the same the screen wont light and there are a series of red led lights. if i connect t to link it shows up as connected but i cant get it to boot please help i have gone through the answers of this similar question but m wondering if there is anything else i can do to get this fixed.... thanx :)