You should use the pot which is in the left top of the screen and take some powder and put it in the fire to pass.
borgin and burkes
You mean the Hand of Glory, which he found in Borgin and Burkes.
You Have To Unlock All Gold Bricks And Then Go To Borgin And Burkes !
He followed Draco to the shop Borgin and Burkes, in Knockturn Alley
Harry first sees the Hand of Glory in Borgin and Burkes, located in Knockturn Alley.
He went into Borgin and Burkes to get the Vanishing Cabinet fixed.
It's a vanishing cabinet so he can get deatheaters in from Borgin and Burkes past the Castle's protective enchantments
He choked on his bacon sarnie, and he accidentally said something wrong and ended up in the shop 'Borgin and Burkes' which sold dark magical objects. 'Borgin and Burkes' is on 'Knockturn Alley'
He tried to get a job at Hogwarts School of Witchcraft and Wizardry but failed. He did get a job later on in Borgin and Burkes in Knockturn Alley.
try to see what draco bought
Malfoy asks Borgin if he knows how to fix something, and that it needs to stay put. He threatens him with Fenrir Greyback, who's a family friend, and will stop in from time to time to make sure Borgin is giving the matter his full attention. (pg. 125 in Harry Potter and the Half- Blood Prince.)
You have to unlock all the gold bricks and go to Borgin and Burkes. There you will go into a bonus level and, once you complete the level, you will get Voldemort.