MTP device not found in XP with WMP 11

Sansa e250 has MTP and MSC modes. Only MTP mode can be used to open or view folders on the device/player, and therefore adding or deleting files can only be done via MTP mode. Moreover this is the ONLY way Windows XP or WMP11 (or any other version) will even properly recognize the player. The peculiar thing is My player is recognized perfectly and fully functioning in MTP only on one particular install of XP pro sp3. I have tried several such versions, i.e. with sp3. Even after all possible driver packs are installed, including MTP 8.05 - Sansa e250 does not work in MTP mode. Sansa itself has nothing useful to offer to solve this, nor is there anything helpful on the included software for the player. PLEASE PROVIDE A SOLUTION FOR THIS ONCE AND FOR ALL. THIS WILL ALSO BE OF TREMENDOUS HELP TO OTHERS AND SAVE HOURS OF FRUSTRATION.

THANK YOU VERY MUCH

solve your problem from my post:

http://amritbera.blogspot.com/2008/11/mtp-problem-solved.html

i have some problam to join my mtp device and allready plugin my mtp with computer but xp can not detect it so give me answer what i have to do..

MTP only works with USB2.0. Check to see if your USB controller is USB1.1 or USB1.0. If so, u might be able to update the firmware for your motherboard.