Member Avatar for rpv_sen

Hi Friend

I am having Toshiba Laptop Satellite Pro L550D model with PSLXTE serial, I have formatted the system and i installed windows 7 home premium, but my USB drive is not getting detected, I’ve checked my bios it shows USB driver is Enable. But I don’t have driver CD with me.

Pls any one can help me

  • 4 Contributors
  • 16 Replies
  • 304 Views
  • 1 Week Discussion Span
  • Latest Post Latest Post by rpv_sen

Dani AI

Generated

Brief summary and focused checklist for the Toshiba Satellite Pro L550D thread: a clean Windows 7 install reports USB devices as an unknown/failed install while BIOS shows USB enabled and the same pen drive/data card work on other machines. ’s advice to use Windows Update and Toshiba’s site is valid, and ’s device/tests comments are helpful; the most common causes left to check are missing chipset/USB-controller drivers, leftover “ghost” USB device entries, or a hardware-level controller fault (as suggested — a last resort).

Start with Device Manager cleanup (this often fixes driver-install loops):
Open an elevated Command Prompt, run:

set devmgr_show_nonpresent_devices=1
start devmgmt.msc

In Device Manager choose View → Show hidden devices. Under “Universal Serial Bus controllers” and “Other devices” uninstall greyed (non-present) and the “Unknown” entries. Reboot and let Windows re-detect.

Install chipset / southbridge / USB controller drivers next. On a second PC download the exact L550D chipset (not only individual USB device) package from Toshiba support, transfer it by USB and install offline. If Toshiba drivers fail, capture the hardware IDs from the Unknown device (Device Manager → Properties → Details → Hardware Ids) and use that ID to locate the specific vendor driver.

Other useful checks: perform a power-reset (remove AC and battery for 30s, hold power button ~10s, reconnect), ensure Plug and Play service is running, and in each USB Root Hub properties uncheck “Allow the computer to turn off this device to save power.” Run sfc /scannow to rule out corrupt system files.

If ports still fail, boot a Linux live CD/USB or the laptop’s diagnostic utility to confirm whether USB works outside Windows. If USB fails in firmware/other OS as well, a motherboard/USB-controller failure is likely and professional repair is recommended. BIOS reset to defaults (or a BIOS update only when Toshiba explicitly lists a USB fix) is worth trying but carries risk if interrupted.

Recommended Answers

All 16 Replies

Member Avatar for Rik_

Keep forcing windows 7 to update until it finds no more updates. That will most likely fix the problem but if it doesn't, try having a look for a driver on the Toshiba website.

Member Avatar for rpv_sen

Thanks for your reply

i have updated upto tillnow, in the USB driver port it is showing unknown port. when i plug usb data card it is showing usb is not successfully installed.

I have tried downloading all the drivers from the Toshiba Website. But no use

Member Avatar for Rik_

Is it a USB port or it it a built in card reader? Did you manage to find drivers for windows 7 for your exact laptop model on Tosiba? Toshiba have a very weird way of organizing their online support which often makes finding the right driver a real pain.

Member Avatar for jingda

What do you use when plugging it into the USB port. A mouse, thumbdrive or other thing else. If they are old try using a new mouse and tell us whether your problem persist

Member Avatar for rpv_sen

I try to connect Data Card and Pen Drive

Member Avatar for jingda

Are they old one or new one. Sometimes old one cannot work

Member Avatar for rpv_sen

its new

Member Avatar for jingda

Try doing a virus scan and tell us what you see. Have you try reformating your pen drive and plug in again to your coputer. You can reformat it using other laptop

Member Avatar for rpv_sen

i have done all the possible thing what are all suggest by you. the same thing is working fine in others laptop

Member Avatar for benmar

try install windows 7 professional or ultimate... see what happens...

Member Avatar for rpv_sen

i have tried windows 7 professional and ultimate, but the problem is not solved

Member Avatar for benmar

something wrong with your Motherboard....

Member Avatar for rpv_sen

when i connect USB it is showing unknown port

Member Avatar for rpv_sen

I am getting the error when ever i connect the USB drive and Data Card in windows 7 home premimum
i have enclosed an screen shot of the issue for your reference

Pls help me to solve this issue

error_usb_not_regonised.jpg 25.64 KB
Member Avatar for jingda

Try reinstalling your drivers again. Something seems to be wrong with your usb port. have you reassemble any parts lately maybe adding more ram or memory?

Member Avatar for rpv_sen

NO, I have not done any thing what you have mentioned

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.