jatinder

Hi All, Thanks to everyone for their help . I just wanted to update the thread about the problem i was facing. NOw it may seem rather idiotic to say , but suddenly my USB's are working ... and pretty fast... I don't know what exactly i did as i didn't install or remove any software/hardware attached to my laptop.... But now i havn't faced any BSOD's and the data transfer speed is very fast. In end i would like to thank all for their help....

Thanks Jedmeister for all your replies. I will get in touch with acer guys and will update this thread in a day or two as i am little tied up with work... Thanks again

Thanks to all for their support.... :thumbup After going through other forums on MSFN i think i found the root cause of problem SIS 7001 USB controller.. I have attached a report i genrated using Everest.. What is strange is : [ On-Board Devices / SiS 7001 OHCI USB Chip ] On-Board Device Properties: Description SiS 7001 OHCI USB Chip Status Disabled [ On-Board Devices / SiS 7002 OHCI USB Chip ] On-Board Device Properties: Description SiS 7002 OHCI USB Chip Status Disabled All these devices are shown disabled.. i don't know why?,,,, I have reinstalled all the USB drivers sevral times but to no avail. As for BIOS is concerned i will contact ACER ... in the meantime if you could have a look at the attachment it has the motherboard details in it...if you could suggest an alternative Also BSOD haven't happened as such since last 2 days and i have been using the HD in question regularly. In end will reformatting my windows help.... Thanks again F__Report.pdf

Regardless of whether a USB hub is powered or not it will not fix your problem. As someone already suggested, if anything it will make it worse (probably make no difference). I think that you have a (laptop) hardware or (corrupted) driver problem. You shouldn't get BSODs no matter how big the file you're transferring is. Can you try your HDD on someones else's PC and see how it operates then? Also can you try another (similar) USB device on your PC? If you can do this test you may be able to confirm its on the laptop 100% (which it sounds like it is - still good to have evidence when you talk to Acer). After that I'd be getting it checked under your warranty. Probably best to confirm that it does actually have USB 1.1 just in case the BSOD isn't totally related? A PCMCIA may or may not fix your problem. If you only have USB 1.1 ports then it will, but I still don't think the BSODs are good (and it may not solve them). I'm not familiar with laptops but most desktops have to have USB set to "HiSpeed" in BIOS for USB 2.0 to work - although by default I imagine it would already be set like that. Thanks JedMeister for your reply, Now i have already tried the hard disk in question(Seagate freeagent) on another laptop running windows vista premium.....it had no problem on it.. i obtained a data transfer speed of more than 28mb/sec on it.... With respect to my laptop.. it is still under extended warranty... but what exactly is the error then only those buggers will have a look at it.. can you help me regarding that... Can BIOS upgrade help.... as the laptop is almost 2 years old.... How exactly can you distinguish between USB1.1 and USB 2.0?... i mean is there any physical difference between them? Thanks again

Thanks all for your replies.... i really appreciate them.. PsiMoon314 , i did reinstall all of my USB drivers but still i am getting popups that please connect the high speed device to another port..... i have tried on all three.... but with same result I'd like to point out that not all websites/spec sheets are entirely honest about USB ports...... Tripredacus , i think you are absolutely right.... Can you suggest any alternative then????... As the laptop is still under extended warranty can i get them replaced.... will a pcmcia card help.... as there is slot for it ?????

thanks jaclaz for your quick response. I checked thru device manager found these drivers for USB: SIS TO PCI converter Enhanced USB driver. and few others .... (if you want i can upload its screenshot) with respect to BIOS i havent seen any setting for USB in it How do you use live cd.. if you could give me some starters i would really appreciate that? Also by USB hub i meant externally powered such as from Belkin or Logitech... Thanks again for your time...

Hi all, Thank you very much for reading my post. This being my first post on this forum , so please accept my sincere aplogies if i have posted this in wrong forum. Problem: I have ACER 5004wlmi with windows Xp professsional SP2 installed in it. Yesterday i bought Seagate freeaget desktop 500 GB hard disk , but whenever i try to to use this drive with any of the three USB's i get this error that ..... please change port as the device you are trying to connect is of high speed USB and it will work in reduced mode if used in this..... Now whenver i try to transfer huge amounts of data (say more then 3 GB) at one go it gives out BSOD.. I ran windows debugger , and it is showing this erroe as due to "ntoskrnl.exe". I have checked thru three antivirus solutions: ESET , KIS and N360 and it's not the dreaded virus. Please help me regarding this . As a workaround i am thinking of buying USB hub either of BELKIN or IOGEAR .... will this help??? Thank you in advance for helping me out. I am including the most recent memory and user dump file... P.S. See the attached files Memory_Dump.txt User.DMP.txt