How to Hard Reset in ARCHOS 45c Helium 4G - Bypass Screen Lock
How to Hard Reset ARCHOS 45c Helium 4G - Factory Reset Instructions
How to Unlock ARCHOS 45 Platinum - Hard Reset / Format
Hard Reset ARCHOS 45 Platinum - Restore Andorid / Format Phone
Hard Reset will erase all of your data
All described operations you are doing at your own risk.