go to start->run type in msconfig and in startup disable
everything and reboot when prompted.
See if tht helps.
This is not highly recommended for PCs and laptops which are not
DIY. OEM installs often have so many hidden things that are unknown
to us. Disabling everything will only serve to cause more
problems.
HP is one example. One of the programs need to load at startup
for it work properly. Do that and you go and reformat your
laptop.
Moreover, you didn't state if you own a Toshiba to do such a
risky thing. If it works, good. If it doesn't, good luck to
you.