BB Bold :: Blinking Light, Device Not Recognized?

I have this old 9700 I got from a friend that he says is bricked. I took a look at it and when I put a battery on it, it blinks twice, pause and blinks twice again. It does that and never loads. So I thought, this would be an easy fix. I would just reload the OS and it's good to go. But I was wrong.First thing I did is I went and installed an OS6 (.650) and tried the loader.exe but when I click on Next, it does't recognize a PIN, it says USB-PIN: UNKNOWN. I clicked on next nevertheless and tried to reload the OS but then it won't go past the Loading JVM step which is the second step I guess, being 'Erasing Applications' as the first one. I left it for a couple of hours and it still won't load the OS.Next thing I did is tried to wipe the phone using BBSAK, CrackUtil and JL_Cmder. With the CrackUtil, it says 'Phone not connected' while the JL_Cmder won't let me wipe it. It just keeps on going back to the Menu after I've typed 'blackberry'. The BBSAK won't recognize the phone either.I tried using Desktop Manager as well. It can see that the phone is a 9700 but on the PIN, it says 0.One more thing I noticed, when I put on the battery, the red blinks but when I take off the battery and just plug the USB cord, it won't do anything. My computer will do something (makes a sound and 'recognize' the device in a way) ONLY if I have the battery put on before I put the USB cord on. If it's the USB cord alone, without the battery, it stays dead. Which is weird since in my experience, my computer always recognize BlackBerry devices whether a battery is present or not when you plug the USB cord.Oh and BTW, now my computer doesn't read my phone anymore, whether I put the battery in or not. The phone keeps blinking though, when I have the battery on. Blinks twice, pause and do it all over again.