Unlock Dell Bios -595B Master Password

So, you have a dell laptop. It goes through post and loads windows. You can also access the bios but the setup is locked, hence you cant change boot sequence etc. Well, here's what to do about that.

On the Unlock Setup screen, your service tag is displayed on the bottom with a "-595B" at the end. Go google "dogbert's 595-B keygen". It is a small utility that generates master bios passwords, master hdd passwords for dell laptops. You will also find a website linked to his blog that just allows you to enter your service tag with -595B at the end and it will generate the bios master password for you. It might show you a few passwords, try them all, it should work, and it does, it has for me every single time. Locked setup or locked system, Dogbert's crack works on every dell.   

Cracked laptop screen but good backlight, or good screen but dead backlight

If you have a laptop with a cracked screen but good backlight, or a good screen with dead backlight, find the other. You will find plenty sellers on craigslist with laptops that have the same size screen as yours, but dead backlight or cracked screen. Find the one that works for your situation. This way you can fix your laptop screen cheap as chips instead of buying a new screen for a 100 bux or more.
 
You can disassemble the screen. A laptop screen is made in two completely different pieces.

1. Screen where the image appears

2. Backlight

The backlight is what makes most of your screen. It's a flat sheet of clear or offwhite plastic which illuminates when the CCFL or LED bulbs underneath it are turned on. The whole casing of the laptop screen is primarily backlight with image screen pasted on top. The image portion of the screen is another sheet of semi-opaque plastic with electronic trickery and magic on it, which can not be seen until it is illuminated from behind, hence backlight.

Lets say you have a dell laptop with a 15.4" screen that has a dead backlight. And you just out of no where happen to find a dell laptop 15.4" screen that has a working backlight but cracked imagery. All you have to do really, is take a blade, cut out the tapes surrounding your screen housing, carefully pry open the housing, separate the image screen from the backlight, it should just come right off, with the circuitry on the top back, and place it on the screen that has a working backlight. There you go, put the casing together, you're done. Dispose of the cracked screen and the dead backlight, they are no further use.

This trick will only work when you have two of the same sort of screens, i.e. either CCFL backlit screens or LED backlit screens. LED backlit screens do not have inverters, hence no where to plug the CCFL backlight plug, same with the  CCFL backlit screens, they do not have the connector for an LED light strip, they have an inverter.

Some HP or Toshiba screens will light up and work fine with your dell CCFL backlight casing.

Hp laptop screens on dell laptops

I have found that most HP laptop screens, I've experimented with the 15.4" ones, can be connected to dell laptops which sort of take the same connector on the back, but the backlight behavior is weird. Some of these HP screens will light up very dim on all settings, and some will light up dim then bright then dimmer and brighter as you try to adjust brightness.

Some dell laptop screens from Inspiron 1521, 1525, 1520 are all compatible with each other, just replace the whole thing with the inverter included. Inspiron 1521 and 1520 also use the same screen cables. Have the same screen chassis, hinges, etc. The ones with the webcam are plug and play.