Apple Macbook 13" white/2.0Ghz

Sounds like the screen cable is either partially connected, loose or has failed.

some type of operating system problem keeps occuring, comtact APPLE to get it fixed

try holding the option button while powering on. otherwise i would say your hdd failed.
or hold control option p r while booting.

Hard drive is dead or the signal from the hard drive is not being read by the ide controller. I'm working on a MacBook 13 inch right now with the same issue. I had a spare hard drive and a windows Vista disc, so I installed the hard drive and inserted the vista install disc and the laptop loaded and installed Vista on the Mac with no issues. I took the hard drive from the Mac and attached an adapter to it and ran it through a usb on another laptop and the laptop could not read the files on the drive....so, the drive was bad.

You need to perform "Archive & Install" of Mac OS.

If your MacBook is only four months old, it is under warranty. You can call Apple at 1-800-SOS-APPL and explain your problem, and they will walk you through a solution for free.

your hard drive has most likely crashed.  this happened to my buddies macbook and it was $300 for a new hard drive, hopefully you still have a warranty on your mac, that way apple will cover the price.  take it in to apple and have them diagnose the problem.  my buddy was lucky bc apple covered the cost, if they refuse just be pushy and theyll eventually do it for you, im sorry

Hi there Emimely
Unfortunately you will not be able to get passed that. Itis quite a fundamental error.

Do you still have your original installation disk?

You need to boot your make up from that disk and see if you can make some repairs from the apple utility. Failing that you will have to re-install the OS. If you can see the drive from the install disk and you have a external drive available you might want to back up important files now and do a clean install. Or archive the previous system.

It's not finding your operating system. Could be failed hard drive, corrupted registry or a start up disk error. Have you tried starting on the Macbook Pro install disk 1? If not, insert the disk while it's starting up, it and hold down "c" key. When I comes to the start up window, click the right arrow button, proceed to the install window but don't install! Instead select "disk utility" under the pull down menu (upper left hand corner of the screen). Select the hdd in the upper window and click the "repair" button. Repeat the repair again after is finishes. If there is no hdd icon in the upper window, the hdd is probably fried and needs to be replaced. Hope this helps.

We'll that happened to me also.. i researched and found if you goto apple.com and look up support for macbook. Look for .pdf macbook repair manuel. There you'll get start up procedures. turn off power. Then load start disk, hold down "alt/opt" button and then turn power on. Wait for a min or two and then you'll see your hard drive and start disk to choose from. Choose start disk and click enter. Be sure your disk isn't scratched.. i had that problem. Then wait... it takes awhile so be patient. You'll get the whole set up again. DONT ERASE YOUR PRIOR DISK!!! Thats where i screwed up! So.... you should be able to get what you want .. if not.. its a new hard drive you'll need to buy... i'm heading to Best Buy and the Geek Squad for my help!

good luck!