Annoying volume control problems HHHEEEEEELPPPPPPP

hi there peeps

 

i have a very annoying problem with my dell xps gen 2 laptop, i re installed windows and i now have no volume control centre (so my dvds sound naff lol) when i go to delect it i get the message

 

windows cannot execute sndvol32.exe use add/remove programs to re install

 

however i cannot reinstall this from add/remove programs, so i have no volume control in the task bar and cannot get to the advanced controls where i can tweak the sound

 

it also tells me that the volume control centre has not been installed + again to use the add/remove programs

 

PLLEEAASSSEE HHEEEELLLPPP

 

i will owe you a donut if you can help mr fix it