[Q] Lumia 800 lock button problem

[maximuse]

Good day,

When I start up my lumia 800 everything works fine. But If I press lock button, screen gets black, I press lock button again and screen doesn't response after that. Screen never response. Is it hardware or software problem do you have an idea ?

 

[eetu1923]

I have the exact same problem with my sister's Phone, i have tried flashing it some cusatom roms and then returned it back to Telcel 7.8 firmware.. and it is still the same.. so i believe the problem is from the 7.8 system... i dont see how it would be a hardware problem but i hope someone else knows about this..

I want to roll back the phone to the 7,5 firmware to see if it has to do with the 7.8 but i havent been able to find a 7.5 rom to flash..

Please help..