grand2 mtk 6582 strange problem

after reading with cm2 i flashhed it with other file then set is tottally dead then i reflashed wirh my read file set is still dead. then i tried to fladhed with other file now screen is white blank.
no body could solved my problem yet.
every exlert failed here.

cm2 and miracle box total failed to solve my problem.

is there any expert in gsmforum who could solve my problem.

thanks in advance