USB Ports Stopped working after an Internal Power Jack is replaced.

Hello! Sorry, im new around here! :S

Basically, my HP DV6-3065EA running Windows 7 Home Premium (x64) laptop died. I went into a computer shop and asked how much a simple diagnostic test would be to find out how much a repair would be. He quoted me £90. Phew, jog on! That wasn't going to happen!
Anyway, I decided to replace the power jack. No hard job, just a simple unplug and plug back in job. (looks abit like this Hp power jack image by chikyeung on Photobucket). I replaced it; everything is running fine.
I tried to put a USB pen drive into a usb socket. Didn't work. Tried another, didn't work. I have tried several devices and they all work on other computers but don't seem to be working on mine.
I have been trawling the internet for answers, and as of yet, nothing -.-! I wouldn't call myself a novice, trust me, I've tried everything, uninstalling and reinstalling all of the USB drivers, checking bits of the registry.etc. Nothing. So today, i thought, right, WIPE THE COMPUTER! I backed up everything, went back to scratch.
Tried another USB, didn't work.! Im completely puzzled!

Please help!!!

Thanks for reading! ;D

Oh, one more thing. When the laptop was unusable, I removed the hard drive and put it into another computer to retrieve some files. Could this have anything to do with it?

Any help is greatly acknowledged!!

It sounds rather as if your new part somehow isn't diffusing 5 volts to the correct circuits, which is what USB relies upon. Could be a bent pin or misaligned plug on those pins, or a broken wire.

mm, il have to check! Thanks for the reply!