HDD being seen now and again, can not get it to work constantly

reposted as i've had no reply in over 2 days and still broken :/

motherboard randomly seeing hard disk then not
Alright, well last week i got a brand new comp pratically;
brought the asus sabertooth 990fx, amd fx-8150 8-core processor, asus 560 gtx ti graphics card, 8gb of corsair vengeance ram and the corsair gs700

i had issues from the get go, the Hard Drive ran not being seen then being seen again, finally it started to be seen on a constant level but when would not get past the windows logo before flashing BSOD for about 1/10 of a second then restarting so in the end i installed a new verson of windows (now running windows ultimate 64) which in turn made it work correctly .... kinda

it was still having problems seeing my hard disk drive now and again but all i needed to do was remove the psu cable and put it back in for it to start working again the only issue was that the mobo was defected and was only seeing 1 of the 4 dim slots so i ofc phoned up amazon and asked for a new one, which they sent

this is where i am having my issue with my new mobo installed and everything how it was i booted up my comp, it did the normal thing where i needed to remove and replug the HDD in but tonight it is not working at all.

i'm not sure if it means anything but i've also got an optical disk drive in there which is already read, why i do not know ....

before i changed over my gear my HDD never had a single issue, it is also a 2TB HDD so it is up to date enough, i have installed the latest bios, changed the serial ata to disabled and enabled, changed my divice from ACHI to IDE to Raid to no change, i have changed the psu port, the sata cable, the port of the sata cable, removed the power to my optical disk drive, removed my optical sata cable, i've also turned s.m.a.r.t HDD thing (not 100% sure what it's called) to disabled and enabled.

thing that bugs me is that it works one moment the does not the next, i can not even put it to sleep without it stopping detecting the HDD

any ideas guys, which be greatly appreciated as i've spent around £600 ($953) and can not use it ......

many thanks

V

As i said i can't actually get onto my computer to be able to check it for errors
it just appears to compleatly miss out the HDD even though i have changed power + sata cables more times then i care to think.

and thanks for the memo to update my system specs ^.^ only been on the site about 3 days or so now so i'm still a noob :P

yea, it is picking up the optical drive fine, just not the HDD, for the past few days it's not been picking it up at all

but currently:
it is seeing my Optical Disk drive and my USB external drive without a problem, every time is is able to see those, therefore I get ntldr is missing (as it is trying to boot from my External which has no OS installed on it, that is why i am getting the error message, but bar that, not much is happening, it is very annoying :/

hmm, well without my USB External plugged in i get a message saying 'reboot and select proper device or insert boot media in selected boot device and press a key'

when my optical is disconnected i get a message saying 'no boot drive detected' then it loads up bios

and my bios has no sata enabled

this is my bios (advanced\ sata configuration \ SB Sata Configuration)

OnChip Sata Channel - Enabled
Sata Port1 - Port 4 - AHCI
Sata Port5 - Port 6 - ACHI
S.M.A.R.T. Status Check

Sata ESP on port 1 Disabled
---------------- 2 disabled
---------------- 3 disabled
---------------- 4 disabled
---------------- 5 disabled
---------------- 6 disabled