Help Restore Database

[Onie]

first im use file server from forum.ragezone.com/f853/release-dragon-nest-v271-v273-1120104-new/
I use MSSQL 2008 R2 Expres

i can login use server name : 127.0.0.1 so im use servername : VRSIX99-PC\SQLEXPRESS then can login but i cant restore database error database sql error the operating system returned the error 5

please help me

[MentaL]