Hard Reset Galaxy W GT-I8150

TFT capacitive touchscreen, 16M colors, 3.7 inches (~56.4% screen-to-body ratio), 480 x 800 pixels (~252 ppi pixel density), Android OS, v2.3.5 (Gingerbread), Chipset Qualcomm MSM8255T Snapdragon S2, 1.4 GHz Scorpion CPU, Adreno 205 GPU, microSD, up to 32 GB external  512 MB RAM.

PROCEDURES:

Press steady the menu-volume-up- and power key... when logo pops-up release the power key, if you see android logo release all then press shortly the option button in the left side...then follow some instructions.