“The process cannot access the file because it is being used by another process Error Code 0x8007002.”
The error code state that there is sharing violation. The port used by your web site may also use by some other service like Skype or etc. the step to resolve this issue:
1). Check your web site port.
2) open command prompt and write the following command.
For example your web site use port 80.
3). Now open the task manager. click on select column in view menu and select the PID column from list.
4). Now in process tab you can see the process id with associated apps that blocking you web site.
5). Kill the apps to start the web site.