Hey I found this site after hours of hair-pulling and searching for a solution. I read this thread [techspot.com/vb/topic23630.html] that talked about a similar problem I had but different. I've also read a few other threads on this site. Lemme start by telling you the specs of my laptop. I have a Compaq Presario V3000Z Turion64 2.0GHz, 2GB Ram, XP operating system. It is almost 1.5 years old (out of warranty). I basically have 3 problems with my USB ports. 1. My once USB 2.0 ports are now running at 1.1 speed. It just suddenly happened one day. I didn't do any major activities on my pc so I'm really not sure what happened. 2. At the same time, I get a "Device may not work properly" or "Unknown Device" error message for all my USB devices...sometimes, the error message is right, and none of my USB devices (Ipod, Mouse) work. I have to restart my Laptop and usually by the 2nd or 3rd restart, it starts working again. Many have said that reformatting the laptop doesn't work...so I don't plan on doing that. I did try deleting my USB drivers and restarting the laptop. That makes the drives 'work' again (albeit in 1.1 mode), but still doesn't fix the speed. I also tried the 'disconnecting all power sources from the laptop and letting it sit for 30mins' trick -- it didn't help. 3. For some reason, whenever it shows the "Unknown Device" message and I click on it, it shows that I have 8 ports, buttt, I only have 3 ports. Also, it gives me the "Unknown Device" message even when I don't have ANYTHING plugged in. I really don't know what made my USB ports go ballistic all of a sudden, but if anyone has any tips on how I can fix it, please share.