I have a W95 machine that just started giving me trouble at start up.  I get a write protection error.  I reboot and go into safe mode.  I delete the ps/2 mouse dirver and reboot.  The PC recognizes and installs the driver for the mouse and my computer works fine all day.  I shut down and the next day the same error occurs and I have to delete the mouse driver again after getting the write protectio error again.   Any suggestions