|Same problem here, been getting worse for a couple of months. I have moved my usb2 card with 4 ports on it, at the back to another bank which I thought was better but its not really cured. The 2 usb1 holes at the front seem to be electrically alive, when I touch a plug to them, computer instantly dead and reboots, but - I hear a little crackle, like live electric where you don't expect it to be. I feel that all the usb ports are being damaged, 2 front ones, my 4 usb2 on a card, and also 2 rear original ones that came with the computer. It is not a question of which devices I am attaching either, it's all or any of them.|
I haven't tried the uninstalling all usb ports in device manager yet, just learned that one. Will do so next. My gut feeling is that it is a hardware/electricity thing. I have a wireless mouse which has always worked fine, but now, when I sit the mouse in its cradle, that in itself is enough to crash the computer. So doesn't that sound like a power problem?
I will be back to see if any replies, thanks all. Vanessa.