Member Avatar for dorusone

Hi all,

I have a Usb Flash Drive Cruzer Micro 1.0 GB from Sandisk
(which should be plug and play) which isnot recognized
in my Windows XP Home SP2 PC.

i have allready tried MANY things like :

1) Upgrading XP to the latest version SP2 etc.
2) Flashed my BIOS (which did go ok)
3) Studied USBMAN.com advices,
4) etc etc.

BUt still that thing says "You Look it but :)"

Possible problem area's are IRQ conflicts of USB ports.
2 unknow devices in device manager.

I do have a seperate PCI- USB card installed (with software)
and other devices (like a external HDD) do work OK through
that card.


If you need more info I will give that (but i am not home a few days so answer may take some time)

Thanks in advance

O yes i contacted Sandisk today. (but no reply yet)

Good Luck

Theo

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  • Latest Post Latest Post by ashikkalam123

Dani AI

Generated

For and others seeing the same symptom (, ): first isolate hardware vs OS before deeper troubleshooting. Try the Cruzer on one or two known-good computers and, conversely, try a different, known-good USB stick in the XP machine. If the Cruzer fails everywhere it is almost certainly a failed stick; if other sticks work in the XP box, the issue is the OS/drivers on that machine. Do not perform destructive actions (repartition/format) until any important data is recovered.

If the stick works on another machine, focus on Windows XP repairs (non‑destructive first). In Device Manager enable “Show hidden devices” and remove greyed/unknown USB entries, then uninstall USB Host Controllers/Root Hubs and reboot so Windows redetects them. For each USB Root Hub, turn off the power‑saving option that allows the computer to turn off the device. Check Event Viewer (System) for Plug and Play/USB errors. Verify the USB mass‑storage driver is enabled by checking HKLM\SYSTEM\CurrentControlSet\Services\UsbStor — the Start value should be 3 (export the key before editing). Also update the motherboard/chipset USB drivers from the vendor.

When the device appears but not in “My Computer,” follow ’s observation that Disk Management can reveal a missing drive letter. If Disk Management shows RAW or unallocated, recover data first, then recreate a FAT partition or use the manufacturer’s diagnostic/format tool (’s suggestion is valid but only after backup). For lots of stale USB records, a tool like USBDeview can safely remove ghosted devices. If the Cruzer is never recognized on any other machine after these checks, pursue SanDisk support/RMA. Always export the registry and back up files before making low‑level changes.

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All 4 Replies

Member Avatar for dougf

Did you ever find a solution? My laptop stopped recognizing flash drives, but recognizes other USB devices.

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My USB Webcam becomes unrecognized after a week or 2 and then I need to plug it into another USB port. All other devices work. Sometimes the port starts working again. Anyone have any ideas?

Member Avatar for Capt_Kirk

I had problems once like this, apparently my HDD was going bad and it had corrupted the registry. So USB flash drives stopped working in that computer. It would say that it was installed and ready to be accessed but it did not show as a drive in my computer. I was able to look at the data but only by right clicking on my computer, going to manage --> disk management, I could see the drive there but it had no drive letter assigned. So I assined a letter and then right clicked on the drive and then went to explore. I had to get a new HDD eventually.

Member Avatar for ashikkalam123

try this.
Right click on my computer and click manage and then select disk management.Choose your USB drive and delete the partition and format it as FAT.

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