New
#11
Please explain this as it makes no sense at all.
Did Win7 fail to start after re-imaging? Did you confirm it's marked Active and run Startup REpair up to 3 separate times to start it?
Did you set drive letter to Auto so Win7 partition would claim C as it always does in that case?
A flash or data drive letter may always change.
What is Prism?
What drivers did you load? This should be automated requiring several reboots to install the drivers it changes out, then any others updated via Windows Update. Afterwards there's rarely more than one or two still missing in Device Manager, supplied from the Support Downloads webpage for your model.