Isn't the fix, shop for a new mainboard.
So my 4 year old niece was playing with my laptop by plugging/unplugging usb cables and thumb drives. A little later, maybe 30 mins to an hour, I noticed she had jammed a usb into the Ethernet port. I removed and didn't really think anything of it. My laptop (Toshiba Satellite C655) is a 2010 model so it didn't come with blue tooth and I have to use a usb dongle. I went to use it and realized it wasn't working. I've tried reinstalling drivers and I even checked the current with a multimeter. I started from scratch as well by wiping the hard drive and reloaded original drivers with a recovery CD. A couple times I would notice that the dongle was blinking and would start to install the driver(s). The first few steps were successful and the last one of course fails. It thinks that the device gets unplugged, which of course isn't actually happening. I've hit a wall as far as which direction to go in next. I can solder but just wanted to make sure that I'm not skipping a step that could revive my USB (x2) and Ethernet ports. Frankly, I'm not even sure soldering would even matter in this situation. Any advice would be appreciated. I look forward to and patiently wait for your gracious inquires. Good day.