Computer keeps restarting with black screen

Hi everyone

I have a laptop that doesn't boot up. The last time I used it was 11 hours ago and I used the hibernate feature to shut down the computer. THe last software I installed is Big Kahuna Reef Game found on Amazon.com and the Amazon.com game download program. Those are found here: http://www.amazon.com/Big-Kahuna-R [...] 820&sr=8-1

So I press the power button and these are the symptoms:

-black screen, no a single text, letter or image shows up
-No option for entering setup or bios
- keyboard does not show lights, so I can't tell if it responds even after hitting cap locks.
- touchpad mouse has a light but when I push the disable touchpad button it doesnt change to orange as it should. So that's frozen
- I dont hear any beeps or error codes
- It automatically powers off and back on repeatedly every 20-30 seconds

Here's my specs:

Compaq Presario Laptop F557US model
2 years old
Windows Vista Basic 32Bit SP2
AMD Sempron Processor 1.8 Ghz
2GB DDR ram
Broadcom wireless card that failed 1 month ago (randomly boots back up)
NVIDIA GeForce Go 6100 Video Card
100GB (5400RPM) Hard Drive (SATA)
24X DVD/CD-RW Combo Drive
15.4" WXGA High-Definition Brightview Widescreen (1280 X 800) Display

Any other specs may be found here if needed:
http://h10025.www1.hp.com/ewfrf/wc [...] ct=3370444

Software:
Avast Antivirus updated daily
Spybot SD updated biweekly
Router Firewall

Stuff I tried:
I removed CMOS battery for 1-2 mins.
I removed both ram sticks, Hard drive, wireless card, cmos battery and booted it up.

I put the items back but 1 at a time while turning on the laptop before putting the next item.

Got any solutions? Also according to the manufacturer site, I have a SATA hard drive. If I cant get the laptop to work, how do I know which enclosure to buy so I can transfer my files to my desktop?

Did you also try the memory per stick, first one solo, then the other one solo? Can you get an image on an external monitor? Get the cpu out and have it tested? Warranty?

You just have to remove the bottom plastic part that covers the ventilators (including the small memory cover, and the heatsink with the 4 spring-screws. Then it's a lever to release an AMD cpu. or a screw for an Intel processor. I hope it is the cpu (or still both memory sticks), but I'm afraid it may be gpu/gpu-memory since there is no life on an external screen.