urgent help needed

[Guest cyberaun]

is there any1 one here live in essex can meet me somewhere to fix my g510 please

i just cant figure it out

 

tried flashing twrp but doesnt do anything 

tried using updata vol - + power 

cant get twrp to come up

and when boot normailly cm10.1 r14 comes up but says evyrthing has stopped and cant get past