IPhone 4S stuck at DFU mode, can't exit, can't restore, can't boot.

Ok so,
My iPhone 4S wouldn't boot up one day, so I decided to restore it using iTunes. First attempt was unsuccesfull, but I did it the second time. The next day it wouldn't boot up again (probably cause I restored an iTunes backup I made before). So I decided to restore it again, but after 100 attempts (literally) it wouldn't restore. ITunes is stuck on "Waiting for iPhone" screen, and the progress bar on the phone is stuck at 0%, not moving at all! According to tinyumbrella, my iPhone is in DFU mode, but I get a black screen and I can't boot up. I was using iOS 6.1.3 and I WAS NOT JAILBROKEN!
Things I tried but didn't work:
- Holding home button and power button together in all possible ways.
- Trying the "Fix recovery" option in tinyumbrella.
- Holding home button before plugging in the phone to the pc.
- Redownloading iOS 7 off the internet and trying to restore it via iTunes.
- Using 3 different computers (1 desktop and 2 laptops).
- Disabling my anti virus and firewall.
- Using REC BOOT to enter / exit recovery.
- Trying to recharge the phone, but it wouldn't do a thing.
- Restarting my pc.
- Let my iPhone off for 10 or more hours.
- Removing SIM card before trying to restore.
- Redownloading iTunes and updating it.
- TRYING 100 TIMES THE "Update and restore" OPTION IN ITUNES 11.
I did nothing wrong, it suddenly decided to stop responding and to stop powering up. People get this when they're jaibroken but I wasn't. It's been 2 months more than 45 days of me trying to fix it, but no luck .
Please HELP!

I actually got it for 2 euros from a prize machine at my local mall . That was like 4-5 months ago but I never experienced any problems with it. You could tell the iphone was original, so it wasn't fake...

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Mac Medic ([email protected]) Oshkosh, WI
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IPhone 4S stuck at DFU mode, can't exit, can't restore, can't boot.

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