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try to use arrow key and TAB and try to System Restore your Laptop its in start menu, all programs, accesories and then System tools.
make clear you have a laptop or desktop?
and what kind of model for example toshiba satellite 100a.
What model of Toshiba laptop do you have. There is usually a key sequence you can hit to re-enable your mouse.
Can you please tell me the operation system you are using?