Have you rebooted? Reboot's cure 92% of all problems!
If rebooting doesnt help, it's probably a driver problem/conflict - possibly (but less probable) a hardware problem.. There is no fast/easy answer to fix it and there are probably a million ways to troubleshoot - i would start by doing a system-restore back to a time/day that it was working. If the problem is driver related this may fix it, temporarily at least.
need help unfreezing my curser for laptop
We are discussing your cursor issue here: Sony Vaio cursor wont move .. although not a lot of answers just yet.
an external mouse (wired or wireless) will probably work.. only one way to know for sure!
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