My gateway 7330gz won't boot beyond the boot screen half the time and the other half of the time it boots but it has stuff missing such as my wireless or my system restore. Won't let me reboot from my XP disk because I was just gonna format it and be done with it. My fear is that my motherboard has completely crapped out. Any suggestions??

Computer does not boot up
The problem maybe the RAM, it could be faulty or just needs reseating to make proper electrical contact.
Reseat the RAM and then boot up your laptop. If it still does not boot up then remove the RAM module/s and take them to your friendly computer repair shop and get them to test the RAM for you.
Just like you sometimes need a mechanic to repair your car, sometimes you do need a technician to diagnose and identify the fault or faults on your computer. Not only does a good service technican have the experience to deal with this type of problem, they also have the equipment that allows them to look at things the average computer user can't see, and he has a collection of replacement parts that can be used to quickly test individual components on your computer.

A black screen on startup can be so many things! I have learned this lesson the hard way. Never turn off the computer when it is half way through the boot procedure. Even when it is taking forever, or having a major problem you must let it run through if possible. Interrupting it once may be ok, but twice or three times is a no no. After you have carelessly restarted and shutdown a few times the black screen may appear. But this time it may be beyond repair for the average computer user. http://tips4pc.com/articles/computer%20troubleshooting/how_to_repair_a_damaged_boot_sec.htm

Good Luck!!!!!!

try this, its to check whether your LCD is OK or NOT
try connect to projector
if the projector displaying mean your LCD are NOT OK.

Press F8 as the computer boots up, when you get a Windows menu option select LAST KNOWN GOOD CONFIGURATION and then press ENTER.
If that doesn't work boot up and press F8 and select SAFE MODE and press ENTER.

ribbon cable

format your system and re install Windows,
this is master boot problem.

You must set the boot sequence of the system to cd/dvd rom first which will enable the system to look for booting files in the disc in the first instance.

In your case your system is booting direct from hard disk. Boot sequence can be changed ib the bios setup of your system.

In some laptop models the restore files can be accessed by pressing function keys while system starting.

Probably a virus, or your windows folder got corrupted. Try to use Knoppix (A linux distrobution that boots from a CD) to get all your data onto a pen drive or external hard drive. Download the Knoppix ISO at Knoppix.com and burn it onto a CD or DVD using MagicISO (magiciso.com). Insert the CD, and you should see the boot screen. Open the file manager, and copy all the files you want to keep from your hard drive to a pen drive or external hard drive. Then, reinstall Windows using a recovery CD (one might have come with your computer). Copy the files back, and PRESTO! 

for me this is the try and test situation,
try to remove ram -- look what happen. or try to turn on the laptop with the xp cd in the drive rom, there a similar case and the problem solved after i take out the keyboard and put it on again.

Hm...That sounds like either the motherboard is dying/dead or a device is (such as the hard drive). I would suggest removing one piece at a time and see if you can get past that screen. The most annoying would be if it is the DVD drive since it's probably the most difficult device to remove from the laptop. (If memory serves it involves removing a certain screw from the bottom and then getting under the keyboard so you can push it out).

Do you have a second stick of RAM installed? Mine died a while ago and caused real heck with my 7330GZ.