Hi, I have an Acer Tracelmate 3201XCi and all of the usb's have gone off. I tried plugging in a memory stick and a power surge notice came up. Since then none of the usb sockets work. They still have power going to them as a small usb hoover works fine. Things I have tried so far:
I have reset the bios
I have re-installed Windows XP
I have Unistalled / reinstalled the USB Universal Host Controllers and updated them
I have unistalled / re-installed the USB hubs and updated them
I purchased a PCMCIA card with 4 USB slots on it. (When I put it into the PCMCIA slot the computer freezes until I remove it then the laptop goes OK again - It does try to install but freezes half way through the plug & play setup.)
I have also updated the chiset drivers from the Acer Site
I have tried the memory stick in other laptops and it works fine.
In Device manager the USB's are reported as working and all are enabled. In the USB hub properties however under the 'Power' tab I have a description of "2 Ports available" and "power Reqd" = 0mA - is this correct?
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The official upgrade slot is located on the bottom of the laptop and is
easy to find. Just unscrew the small cover and there it is.
The other slot requires you to unscrew the two screen bracket screws.
Once you have done this, between ESC and F1, F4 and F5 and F12 and
PrtSc there are small plastic rings. Put a biro nib into these and pull
down. They will pop down. You can now remove the plastic cover.
Unscrew the two screws marked "L9" on the bottom of the laptop which
are located at the top of the memory cover. Now you can remove the
keyboard. Underneath the keyboard is the second RAM slot. The SiS 650
chipset supports a max of 1GB per memory slot and since this laptop has
two slots that means 2GB of RAM. I've used Kingston DDR400 PC 3200
You can also upgrade the CPU - the fastest CPU available is the
Pentium-M 2.6GHz. Nothing faster will work - trust me on this. It must
be a Pentium 4 Northwood architecture CPU with a 400MHz FSB. Standard
P4 Northwood CPUs with the metal shim won't fit - unless you know a way
of removing the shim without destroying the CPU. Best to stick with a
Pentium mobile (Pentium 4 M) chip. Look on Ebay for these.
Of course the hard disk can also be upgraded - a 200GB 7200RPM 2.5" drive works a treat. Non SATA of course.
You can add wireless and USB 2.0 using PCMCIA carbus cards. I use a
StarTech 54mbps wireless card with the RAlink chipset and a NEC USB 2.0
card with 4 USB ports. Both cards fit in at the same time.
motherboard dont have fuse has diodes which act similar to fuses but wont be blown.only things that will blow in that area are transistors or capacitors;but if these were blown usb's would not be detected.
in device manager were its says working correctly it relates to software istalled and working properly it cant tell u that the hub connection is damaged internally.
if your usb's are on card and connected to motherboard they can be replaced otherwise if built into motherboard youll have to take it to repair shop.
if the only problem is when u connect a usb device and not causing any other problems,u could use usb hubs that go into the pcmcia