Bad port, cable or driver issues. Try new cable first and all ports. Then treat it like you first did. Reinstall drivers and repeat how you set it up back then.
Remember that as XP and apps age they can roll over and die. This is well discussed (app death) so I'll stop here.
I used to be able to connect my Lava phone to my WinXP desktop and transfer files etc. Something changed and now when I connect my phone my system does not recognize the USB connection. any suggestions?

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