I've unscrewed everything, it appears my last hold up is the 'monitor'. It appears that I need a 'key'. Does anyone know how disassemble the Gateway 7405GX laptop? I searched the Gateway manual, I don't think they want me pullin' it apart.
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This sounds like a bad display on the laptop. Hook up an external monitor to the vga port on the laptop. You may need to toggle the display to output to the external monitor. This is generally accomplished by pressing the "FN" key + one of the F# keys. Look for an icon that resembles a monitor or it may say LCD. If the graphics display correctly on the external monitor, then you will need to replace the computer screen.
There is problem on the user account, or the hard drive. Try login as administrator. If the problem still occurs you need to reformat your laptop or try the recovery disk or option of your laptop. Or try changing the hard drive. But still, you need to re-install or try the recovery option or the disk.
You may have a 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 the monitor up first then the laptop, 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
On this particular Gateway series of laptops, there is actually a bios "chip" you can replace entirely. It's sitting in a cradle right next to where the keyboard connects to the mobo (square black chip, one angled corner). It's very easy to pop out and replace, and is definitely something I would try.
You can do a search on eBay for "gateway bios chip" and you should have some luck.