It IS posible to lose gamerscore

Yep its just happened to me i played assassins on my friends xbox 360 (with my hard drive and account) because mine had to be repaired and i got over 800G on it then when i recoverd my gamertag onto my repaired 360 it didnt have the 800G and it says i didnt play the game wtf?

who knows, the only way I know that you can loose your gamerscore is if microsoft deletes it.

who knows, the only way I know that you can loose your gamerscore is if microsoft deletes it.

Moncada5

well i phoned them just now and they said 'sorry but we have no record of you account on our database', and i didnt know it could be deleted

Hmm... did you remove or switch hard drives while your Xbox was on, it may have created corrupt data from the game that had lost its gamer score.