For your mouse issue go to right click on my computer > properties > Hardware > Device manager > Right click on mouse and select uninstall. You mouse will stop working. Press Atl + F4 or windows key and scroll via arrow keys to restart your system. After the reboot windows will detect a new hardware and install your mouse back again. Second thing for the mouse pointer issue insert your original windows xp in the cd drive. Run command prompt from Start Menu > Programs > Accessories > command prompt and give the below commands.
Code:
expand <E:>\i386\*.cu_ %SystemRoot%\Cursors
rename %SystemRoot%\Cursors\*.cu_ *.cur
expand <E:>\i386\*.an_ %SystemRoot%\Cursors
rename %SystemRoot%\Cursors\*.an_ *.ani
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