Black screen Powered down after it crashed and the screen turned blue, after I turned it back on it loaded until it got to a black screen and then stopped completely, the mouse is still responding. I just need a solution that won't make me lose everything on my comp.

Sounds like you might have a bad usb cord. Try replacing it.

Hello, doing a "last known good configuration" Works most of the time. Here is how to do it:

1. Make sure your computer is powered down.

2. Turn your computer on and immediately start pressing F8 on your keyboard repeatedly until you see a black screen with white writing that gives you a list of boot options.

3. Use the down arrow on your keyboard to select the Last Known Good Configuration (Advanced) option.

4. Press Enter on your keyboard and cross your fingers.

Good Luck!

from what yu say if i infer correctly then

when powered on the system powers up properly and the HDD and CPU are running fine but there is no display on the screen and is black,

first try the this step, try connecting an external monitor to the VGA port (generally in blue color) and see if you have a Display on the external monitor.

the black screen generally means that either the Display section is not getting power or the invertor board is damaged and this needs professional help in fixing / replacing it.

hope could be of help

Start up in safe mode, run CHKDSK/F then re boot.

http://download.cnet.com/ccleaner/

hope this helps

When you say "screen goes black," does the computer power down, or is it still operating? Does the sleep light come on? Does it respond to the keyboard and mouse? (Example: press the power button momentarily, wait a few seconds for the "Do you really want to shut down" message to appear, even though you can't see it, then hit the return key to answer "OK," and see if it shuts down.) Does the screen go black or come out of black if you tap the computer?
While your computer is working, go to System Preferences / Desktop & Screen Saver, the Screen Saver tab, click Hot Corners, and set a corner of your screen to Put Display to Sleep. Then next time your screen goes black, mouse your way into that corner, pause a few seconds, then mouse back out and see if your screen returns.

the lenses are accessable by removing lower back of unit,clean them with a damp paper towel-wipe them off with a dry one.put back back on unit.
screen/focas controls are in front of unit.remove speaker grill remove black cover using phillips screwdriver.you will see 2 sets of controls.one row is focas.one row is screen controls.red,green,blue.turn each focas control slowly to get the clearest picture for each color.screen controls are touchy(if you turn then too high unit will shut off)if the black and white picture was good i would not adjust screen controls.if it was bad turn blue and green screens down all the way.picture is now red turn green up until it turns yellow then turn blue up until it turns white

are you using windows? just reinstall your operating system, this may keep it back to normal

Try installing the operating system or repairing the operating system.

Sometimes the player crashes with a blank black screen. It looks like it's turned off, but it's actually hung. Try holding down the power button for about 30 seconds, or until the player reboots itself.