What operating system? Have you cleaned out the case? Added any hardware or software before this happened? If you can't start in any mode, try the Recovery Console from the operating system CD. Run a chkdsk. Or you might install it as a slave in another PC.
basically, when i turn my computer on it asks me to choose it to start in safe mode, last good settings, run windows normal. And it says which one I should pick depending on my situation, but the problem is, no matter which one ive selected, it just freezes and nothing happens. wat happened ? the last thing that happened before this started occuring was the mouse stopped working and the computer was restarted.
Any advice please ?