AMD Build extremely unstable. Really need help.

Hello, I'm new to the forum and I really need help. I just built a new system last week and I'm having so much trouble.

The system freezes randomly. There is no pattern to it. Sometimes it takes 10 minutea or 2 hours. Ihave manually set the dram timings on 2 different sets of ram. Both gskills. One ares 14900 8gb and sniper 14900 8gb.

I put the snipers in today and set the timings and increased the cpu-nb voltage by .05 as well as suggested by gskill. After the system froze today, it is unable to post to the bios. The system turns on, turns all of the fans on.and then turns off. No lights or anything on the board. I have to clear the cmos to get the system to boot again. When I try and enter the bios after a cmos clear, I get an error of "overclocking failed." And it enters the bios at factory defaults. If i let the system load, it willload to windows and freeze after about 15 minutes and then it will start all over with inability to post to bios. If i try and manually change any settings to the ram it will be unable to post. I have run each stick individually as well and still freezes.

I uave updated to the latest bios for the motherboard and updated the firemware on the ssd that I have.

Here is.the build specs:
AMD FX-6200 (running at default 3.8 settings)
Asus Sabertooth 990FX Motherboard
Gskill 14900 8gb Snipes and i still have the 14900 Ares 8gb
PC Power & Cooling 750w PSU
XFX Radeon 7850 2gb GPU
Crucial m4 64gb SSD HD (this is the windows drive)
Seagate 7200 1tb HD

If I missed any other relevant information, feel free to ask. I tried being as specific as I could.

Thank you anyone who reada.this and helps me out.
Edited by Raziel1234 - 8/9/12 at 8:38pm

Thank you for the replys.

My timings are 1600 11-11-11-27-1T by default. before I manually change them to 9-10-9-28-2T. The ares were only needing to be set with 9-10-9. It can boot into windows with the defaults but will freeze fairly quickly.

I had actually boosted ram voltage up to 1.55 already. I was afraid of bumping it any higher.

I also ran a memtest last night and it passed without a single error.

Could it be an issue with the motherboard or CPU?

I have had some suggest to reseat my processor. I will try this later tonight when I get home after work. If there are any other suggestions please, i need them.

Edit: stock frequency is 1.5v and holds steady.
Edited by Raziel1234 - 8/10/12 at 5:46am

Thank you for anyone trying to help. Turns out the vram controller on the board is bad. I am doing an rma on it now.