Boot Configuration Error !

I was running Windows 7 on a Dell Vostro 3700 Laptop..After doing a spyware scan and finding and deleting all the entries I found, the next time I turned it on I get the error: oxc000000f "An error occured while attmepting to read the boot configuration data File: BootBCD"

I have looked online for solutions and tried using the Windows 7 disc (a copy) and also tried using 3 recovery disks, these all fail because it just stays completely black with a cursor (left for hours even) or I get a error message something around the lines of "insert correct boot media into the correct boot device" and I have no idea what this means. I cannot do a repair because I can only get the Windows disc to load if I remove the hard drive?? this is the only way I have got it past the green loading bar, so I am stuck and have no idea what to do..it only seems to respond to cds if the hard drive is removed?.. this all happened very suddenly and now I have a very expensive �800 paperweight

To add to this - I also tried the command prompt typing the bootrec.exe code that I found on the internet..selecting command prompt from the option when the Windows 7 disc was loaded, but basically it came up with an error of some sort and it had a drive letter of X:/ on the command prompt ?? ..Also to get to this the hard drive was removed because like I said I cannot get the discs working with it in.. I'm guessing this means the hard drive is screwed but there is clearly a problem with the boot sector and I have no idea on repairing it now.