Here it goes.

My friend saved by his works into my flash drive which was detectable/openable but ...

The very next day, the drive wouldn't show up in My Computer and Windows gave him error code 43 (Unknown device). I been searching for the next few hours to find a solution as the works inside is important to him. I know he should back up his files but let's not go there. So ....

I tried others few systems that once detected his flash drive but the problem still persisted. I don't know whether or not his flash drive is damaged but when plug/un-plugging, there are still sounds coming out though.

Tried solutions:

[On Vista Home Premium/HIS COME]Uninstalled --> Restarted com --> Re-installed (ERROR 43) [Windows 7/MY COM] Uninstalled ---> Restarted com ---> Can't install (ERROR 43)

It seems that my com (Windows 7) had the lastest drivers already but still can't detect it.

Its a Kingston DataTraveller 101 (DT101) 8GB.

Could unplugging the flash drive without clicking "Safely Remove Hardware" is the problem?

Kindly provide some help. Thank you all.