USB Ports On Mother Board Not Working

Hey Guys,
I guess there is too much text in this post but I wanted to give you all a clear description of my problem please help. I have attached few screen shots as well.

I have some problems with my USB ports. I have 2 ports in front and 4 at the back (on the mother board). All these ports were working fine, since last 2-3 weeks there seems to be some problem with it.

I have a webcam that I connect via the back USB port, I never disconnect it. Recently the power supply unit failed when I tried to start the pc. So I replaced it with a new one, everything was back to normal.

Then after a few days or a week I opened my pc because it one of the front USB ports was not detecting my flash drive, while doing this I disconnected all the wires from the back of the CPU including the webcam.

When I restarted the pc the back USB ports stopped detecting any devices, there was a pop up stating, "One of the USB devices attached to this computer has malfunctioned and Windows does not recognize it"
So I tried connecting it in the front port, there came a pop up stating, "Your USB Mass Storage Device can perform faster if it is plugged into a hi-speed port"

I never use to get a message like this in the past and another thing I noticed was that the transfer speed has also reduced drastically. I was copying a few movies to my friend’s flash drive and it took ages,

Transferring at a speed of 800-900 kb/second. The transfer speed was pretty fast on XP and on the same port, I always use the front ports. This is the first time I tried to transfer file on Win 7, my friend using Win 7 gets speed around 30-50mb/sec.

I have the latest windows updates installed, I have checked for driver updates on Intel site and I already have the latest drivers. I have reinstalled all USB ports from device manager.
I don't know if this is a software or a hardware issue.
Please guys help me, I can't find a solution anywhere.

Thanks,
Chinu

Guys please help I am waiting :) for a reply

I tried to look into the bios settings only thing I found was the screen shot that I have attached. Disabled it restarted the PC, then enabled but no use still the same problem. Please tell me what to do now :)

You may have lost functionality on some USB ports which could have shorted out or become disconnected. Check the wiring carefully.

If you cannot find the problem you can use a USB hub if you need more ports than what remain, or take it to a shop to test why some ports aren't working.

I would also suggest you carefully check your rewiring

"Your USB Mass Storage Device can perform faster if it is plugged into a hi-speed port"
This is typically the message you get when you plug a USB 3 device into a USB 2 port.

chinu2710 said:

I tried to look into the bios settings only thing I found was the screen shot that I have attached. Disabled it restarted the PC, then enabled but no use still the same problem. Please tell me what to do now :)

Might want to try the same for USB Legacy.

Just in case your USB ports on your motherboard are not able to be fixed, you can get a 4 or 5 USB port card that you can add to a pci slot on your motherboard.

A few years ago, my USBs on an older otherboard died & I got a PCI to USB card to keep me going until I was able to replace the motherboard. Those cards don't cost much.

Thank you guys for trying to help but nothing seems to work...... I even formatted and reinstalled Win7 but no use
Guess I'll have to do what TBoyd has suggested....If you guys think there is anything else that might work please suggest :)