Which EEPC are you using?
Your data is recoverable. Please contact your company HelpDesk. They could use WinTech on BartPE CD to mount encrypted disk and recover data and/or use SafeTech to remove encryption.
Call >your< IT department, only they can help you now. There's nothing McAfee can do. Your internal IT department need to do a decrypt of the drive and hope the data is still there - Installing an OS over the top of an encrypted drive makes things pretty ugly - it depends on how far you took it, if it asked you to format the drive and you said yes, then you probably have lost everything.