Mircale team plz help me

last night my box is working in vesion 2.36 but mornint give this error
it shows an error like this crc error error 7668 memory interupted …I found only one answer in search like you changed the system date ..but unfortunately my system back up battery seamose doesnt work even if changed within 3 days it will got damaged what to do please suggest…help me thanks in advance