Try this: Disconnect the E drive and leave only the c HDD and your cd/dvd drive connected. Now go into the bios and make sure that the cd drive is the first in the boot order. This should let you boot from the cd/dvd drive when the Win. disk is in. Try to boot first with no disk in as it may find your operating system on the c drive. Once win is up and running you can re connect the other drive. Once detected you can format it or whatever you want.