A compilation of my PC's problems.

Please, help is very much appreciated.

- Frequently locks up seconds after booting.
- Blue screen of death sometimes occurs when starting up a game.
- Disk Defragmenter can neither analyze nor fragment.
- Internet Explorer fails to open, thus I cannot check my hotmail.
- It squeaks.
- It's a Dell.
- Mouse sometimes is not able to move after booting (I have all the latest drivers and firmware for it [Razer Lachesis])
- My logon/password screen has changed to the more formal version, for no evident reason, and will not let me change it back. (XP Media Edition)

Please, help is very much appreciated.
If it is and it does it often then try replacing the memory. If that doesn't help (and no other suggestions here do) buy a new pc, not a dell...