NTLDR is missing Issue

Over last couple days i been having issue BSOD after BSOD
I have done os(32/64) repairs, boot repairs. removed drivers and reinstalled them..

I finally got windows 7 64 bit on my computer again after fixing my xp 32 bit issue's and installed it on a different hdd(since ssd is being rma'ed atm) had all my work files installed, left it on all night and woke up to no dsod for first time in 5 days(advast had error from scanning pc had an hdd I/0 device error 1117 but didn't pay no mind to it).. reset pc for updates

Pc starts going though boot then pop's up NTLDR is missing...

I reset ps went to the bios and seen that it is not seeing the main drive(maxtor 500 gig sata-3)...

After I bounced my head of the desk a couple times, thinking how can I get the boot on the hdd I just finishing installing windows 7 64 the night before..Then some one told me just plug in the os disk and run first screen repair and it will auto fix it and load up... ran the repair said it was done.. didn't work.. am I missing some thing here I know the boot can go on any drive (it really don't matter at all...) But I'm missing some thing small and it's under my nose staring @ me to get the boot working on the drive with windows 7 installed..(xp and w7 are on different drives, current boot is on xp drive and seams to be failing)

Both are org install disk, no memory issue's(12 gig of ddr3 been cheeked all rdy, really don't want to here ranting about have 3, 4 gig sticks of memory and 32 bit os wont boot it's fales and been doing it on other pc for years on dual boot(32/64) pc's)

(DSOD I keeped getting are the following:
Stop:C0x00000003, 0x8A460788, 0x8A460788,0xA4608FC,0x805D2954)

 

I had to think about this a little, as I had this sort of problem, on my previous computer, when running two hard drives, and multiple partitions, with all windows versions in- I found my problem was a faulty sata cable.
Next if not that I would run some tests on your hard drive, and try running first with less ram, to see if it becomes more stable.