"none" <nospam@bogusaddress.com> wrote in message
news:FJH2i.8686$ya1.2888@news02.roc.ny...
>a POWER SURGE ON USB HUB indicates to me either an over current or over
> voltage condition occurred. IF that is the case one must wonder it the
> mobo voltage converter which supplies USB voltage/current is intact.
>

Not necessarily. This failure mode is actually quite common. It is seldom
possible to work out what has caused the port to fail in a way to give this
error message. It should be pointed out that it is not the 5 volt supply
from the port that has a problem, but the one or both of the receivers on
the two data lines. The 5 volt supply will not be enabled if the host is
unable to enumerate the port.
___
> "Indi" <sbrars******.com> wrote in message
> news:1179270112.837051.203880@q23g2000hsg.googlegr oups.com...
>> I have Acer Travelmate 4052 laptop with Centrino 1.6 Ghz processor, I
>> took Hardisk from my PC to copy some data to my laptop and for that I
>> bought a 3.5 inch casing which came along with an adaptor. It went
>> well for a hour and copied some data but after that a message popup
>> saying POWER SURGE ON USB HUB and pulled the usb connector and
>> connector to the other remaing two ports alternatively but same
>> message. When I restarted my computer and try to connect as usual my
>> microsoft usb mouse, my system froze, nothing worked alt+crtl+del,
>> nothing, so restarted but same problem on other ports as well. I
>> reinstalled the USB controller but to no use, I updated the BIOS,
>> enable - disable USB legacy support and USB Mass Storage suporrt from
>> the BIOS but to no use. I tried to reinstall the same Winxp pro with
>> integrated SP2 which was earlier on the system but it froze too,
>> sometimes at intial copying of files after formating, sometimes at 34
>> min remaining screen, then at 9 min, and 5 min remaining to complete
>> the setup.
>>
>> I consulted one very popular laptop repair shop and the technician
>> told me that it is a very common problem with computer and especially
>> laptops and your Intel 82801 DBM chip has to be replaced, there is no
>> alternative, and he was not sure whether it will be ok again, if not
>> he said then I have to replace the motherboard. As it was a costly
>> step, I tried many forum for help but to no avail. Nothing helped me
>> at all.
>>
>> Finally, as I system as out of warranty and being a electronic
>> hobbiest myself, I took apart my laptop and tried something really
>> stupid. I placed my system in front of the airconditioner and
>> restarted the 39 min installation process and walla it did completed
>> successfully. Then I installed all the drivers successfully, I didnt
>> tried the USB at all that time but I noticed that my CPU was
>> constantly at 100% as the system was at IDLE state. I was sure about
>> any virus or malware as firstly after installing windows with SP2 i
>> updated the hotfixes and critical updates from AUTOPATCHER then
>> installed the Internet security suite then connected to internet to
>> update it, so I scanned and as expected nothing showed up. Then I
>> tried the SysInternal which is now owned by Microsoft, the Process
>> Explorer as no doubt the System was slow to 25% of its original speed,
>> I try to figure out by searching the running thread from Process
>> Explorer then I saw 4 threads which were taking all the CPU usage and
>> to no surprise these were USBPORT.SYS+0x5fe6 (ALL FOUR), when I try to
>> kill these threads, access was denied so I suspend them all and my cpu
>> immediately comes to actual idle state 2-5%.
>>
>> I have not found any cure so far please help me. My system boots very
>> very slow then I have to wait for the desktop things to appear so that
>> I can open the Process Explorer to shut those USB threads and then I
>> can work.
>>
>> Is it really the DBM chip fault which I read somewhere as Intel
>> SouthBridge 82801 DB ICH4-M. As I explained I tried everything so far
>> as I am a network engineer myself and electronic hobbiest so far
>> whatever I could, I tried but nothing. I even tried the PCMCIA usb
>> card, it did work once with mouse but didnt worked again. I asked the
>> same technician he said how can this PCMCIA card will work as it only
>> changes the Interface, controller on the motherboard still is the same
>> which has to work.
>>
>> I tried to find the schematic so that I can check the voltages across
>> the MOBO but only could find the service manual that too for
>> Travelmate 290 which has identical motherboard.
>>
>> Please please help me, I am sure that Google group can help me out
>> here.
>>
>> INDI
>>
>
>