[Resolved]  Nokia N70 - 1 — system error

sir,
ive purchased my product last year bt its nt been 10 monts of buying the phone is showing the system error!!!
actually iwas having a problem in my mem card also.few days back when twas ok bt actually when i was viewing my msgs then it showed me the system error for the first time!
now when i was formittin then also its showing me the same!!!
nevertheless, atlast my mem.card is corrupted!!
my phone is also not working as it was working few days back!!
plz help me out