Problem with the screem

go to net search Gateway 7320GZ; 7322GZ; 7325GZ; 7326GZ; 7330GH; 7330G service maintenance manual pdf download and save file open file and follow instructions on diss assembly ,it can take awhile to find the manual though ,that is what i usually do when working on any laptop.

if your charger is ok then it will be a problem with the dc jack (where your charger plugs in to) or your actual motherboard.

Save ur data & & reinstall the Operating system

Turn it off. Wait 1 hr. Restart. It could be that the video card is overheated.

Go into bios and disable speedstep. Your system is overheating.

Hello, you can reset the battery, battery off, after 45 second push down the power botton for 5 secund and release,then put it back the battery and try turn on ,if don't working,you can try follow this link to change the battery.
Amazon com Gateway 7320gz Laptop Replacement AC Power Adapter Includes...

You most likely have a defective screen - a defective inverter or a CCFL lamp or simply the video cable needs reseating. After reseating the video cable and the problem is still there then :-
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

• Screen flashs on red/pink and off.
• Picture stays on in red and slowly be come normal.
• Picture flickering with dim display or appear black.
• Picture flickering on and off.

All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

remember your model is 7320gz notebook but it your notebook is Gateway® 7000 Series
here the site for your notebook series they all the same unless you added something too it like extra ram etc..
http://support.gateway.com/support/manlib/Notebooks/7000/7000.shtml

good luck

You may be able to lighten it up with your keypad if not the screen or video inverter is bad.

try to download it from www.gateway.com