I am running windows xp home edition on a pentium 4 2.53 GHz with 512 MB Ram. The computer takes a very long time to boot. During the boot phase the screen is black and there
is a flashing hyphen at the top left of the screen. The computer can take up to 3 or 4 minutes to boot. Once it boots it is okay but accessing web sites is slow. What might be the problem and
how can I repair the system?