I have NAS4220-B with 2xWD500GB, ext3 partition.
I configured all users.
After 1 day some problem causes - data transfers crashes to 100kb/s after that users can't login via Samba. I restartet NAS via http. After few hours thats happens again. After 3 days i decide to make Factory Settings. And after that don't boot. Flash only orange led and green don't even blink.

Whats happened? And what can i do.

Best regards