Sony Ericsson K750i (phone memory card inaccessable!!!) 

I have Sony Ericsson K750i phone. It was working perfect with PC Suite 2.10.46 (for Windows Vista/XP) lately. I have transferred the data from phone to pc and from pc to phone several times and the process went well. I synchronize my phone with MS Outlook on monthly basis to keep the contacts up to date on both ends and it really works great.

The problem I am facing right now is that everything is working perfect except the memory card in the mobile device. Like I can copy the data from phone memory but the memory card is inaccessible. That is not even showing up in mobile phone browser interface on the PC.

In order to get the contacts synchronized last night, I plug the phone in and there was a message on my pc screen. New hardware found “Memory Stick” & bla bla… upload driver for this device. I thought it was something else or I should plug the phone in again. I did but it didn’t work! I thought there was something wrong with the PC Suite or I should remove the software completely and reinstall. I did but the problem persists!!! I have checked the version of the PC Suite, its latest release there is nothing after that. I am using Sony Ericsson PC Suite 2.10.46 (for Windows Vista/XP).

Questions:
Is there anything wrong with the PC Suite?
Is there anything wrong with the Windows XP on my PC?
Is there some hardware problem in PC or in Mobile (memory card may be)?

There is nothing left in my mind that I should try.

Suggestions, comments, guidelines are welcome. Let me know if you guys have any idea…