Try the science approach for that; unplug & re-plug mouse; reboot. If NO, then replace with known(!) working mouse.
One thing we need to do is separate this into specific problems, rather than it's all slow. eg lets try to get it booting properly first.
For that check grub.conf, /var/log/dmesg.
lshw, lsusb, lspci, dmidecode, http://www.linuxquestions.org/questi...d-line-361738/
Also, specify exact distro/version and HW specs. Thank you.