Cannot format the drive

[Sia]

hi plz help me i cant format my drive when i want to format it it says :somthing is using this drive and you cant format it.

 

Operating system:Windows 7 Ultimate (64 bit) Service Pack 1

System root: C:Windows

Available physical memory: 4095 MB

CPU: Pentium® Dual-Core CPU E5400 @ 2.70GHz

Drive Info:

C: 100.58 GB

D: 100.59 GB

E: 164.00 GB

F: 100.59 GB

G: 100.59 GB

J: 100.58 GB

K: 100.58 GB

L: 164.01 GB

Internet Explorer: 11.0

[xilolee]

Hi Sia.

What drive is it?