Trying to restore but receiving errors :'(

[tyler_zyco]

Earlier I was installing a Cydia hack, but it became frozen during the package installation.. so I figured I would restart my iPhone 4S.
What a mistake!

Now my iPhone 4S will not get past the boot logo.

I have tried restoring while in DFU mode, but I only receive error messages like the on included below (The iPhone "iPhone" could not be restored. And unknown error occured (21)
)
Is there something I can do to restore or am I screwed?

P.S. I also have my SHSH blobs saved to TinyUmbrella if that means anything.

 

[tyler_zyco]

(sort of) fixed the problem!

I entered DFU mode and restored from my Mother's Windows computer instead of my Mac!

 

[gthugballin]

if you have tiny umbrella on your computer thats probably the reason