Computer Freezes on bootup/sometimes doesn't post help!

[Takasniper]

I basically built this computer about 3 months ago. after couple of months I start to notice after I start the computer my tower comes on but no display. I restart the computer and it post but then I get an overclocking failed error. I tried installing vista twice and now I'm using window 7. Its starting to freeze up after the post and when you get the glowing windows flag. But mostly when I first turn it on I get no display but tower fans and all that good stuff is on. I'm tried to reset cmos multi times. My comp is not overclock its on stock clock. I just can't figure out whats the problem, what I do notice also is if my computer is on and loaded I'll restart about 2-3 times to see what it does and on the third restart that when it give me the overclock failed/or doesn't post. I'm sorry if I sound confusing I'm doing my best to explain. My setup is below also windows is fulled updated and bios is most current.

Specs.
ASUS M4A78-E AM2+/AM3 AMD 790GX HDMI ATX AMD Motherboard
Item #: N82E16813131368

AMD Phenom II X3 710 2.6GHz Socket AM3 95W Triple-Core Processor Model HDX710WFGIBOX
Item #: N82E16819103648

Antec EA650 650W Continuous Power ATX12V Ver.2.2 / EPS12V version 2.91 SLI Certified CrossFire Ready 80 PLUS Certified Active
Item #: N82E16817371015

OCZ Reaper HPC Edition 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model OCZ2RPR800C44GK
Item #: N82E16820227267

EVGA 896-P3-1255-AR GeForce GTX 260 Core 216 896MB 448-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card
Item #: N82E16814130434

Western Digital Caviar Black WD6401AALS 640GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive
Item #: N82E16822136319

 

[KSoD]

Have you checked for a BIOS Update?

 

[Takasniper]

Just updated it a few days ago still didn't fix the problem.