hello people,
i recently upgraded my pc around 5 days back....whenever i connect my
Transcend 8gb pen drive or Wacom Bamboo Fun tablet...my windows gives me a error "Power surge on hub port: a usb device has exceeded the power limits of its hub port"

....after that my tablet and usb pendrive is not getting detected at all

... i checked for solutions over the net & i found a many many solutions i did all those but still my tablet and usb pendrive is not getting detected at all..i even changed my
500w power supply also..still its giving me the same error..
even i tryed connecting my tablet and usb pen drive in my brothers comps..
its still not getting detected at all...i am getting scared that my tablet & pen drive is gone for sure...plz somebody help me with this problem
my motherboard is
Gigabyte S Series, Model No :
GA-G31M-S2L
OS:
Windows XP Professional SP2