help i cant write arabic

[::مـحـمـد::]

please shabbab !
someone help me !

last days i wrote in arabic .. and there was no problems
but today like you see im writing in english .. because i cant write in arabic .. i checked all my language sittings in contrel panal .. all sittings perfect

and see now i will write ( assalam alekom ) in arabic :
'D3D'E 9DJCE
see ??? i cant

but when i choose ( alkhat ) ^ up ^ it write arabic .. see:
السلام عليكم .. ياشباب بس لما اختار نوع الخط يكتب عربي .. ارجوكم اريد حل سريع
see ???

please im waiting for the answers
Bye
Mohd.