hello, im french so sorry for my bad english .... i see that you will be able to help me, my computer is out because i don't know what is my password (i give it to a support who have reset all and change some part to "upgrade" a litlle bit... and they give me my computer all new but password manager required.... what is the f..ck? oops ... ) so my service tag is :#F0HY2Q1-1D3B my computer is a latitude e6420 ( core i7) ,express service code: 32681878345 and bios revision A19. thanks for reading me and thanks a lot if you can help me, peace and maybe see you soon