Faulty hardware cannot boot

Mate nice machine specs - but did the machine come with the install disk?

Ooops sorry my friend I read that as bought

Now if yoyu haven't got a lot of data on that drive personanlly I would be doing a reinstall.

Now it won't boot to the disk so have you got access to another machine to clean that drive? by that I mean to wipe it of everything and then align it as is recommended for SSD's?

If you do you can do that by attaching the drive to the other machine by installing th drive into it or use one of those USB gadgets and use either the DISKPART feature or the wipe in Partition Wizard.

Partition Manager Server, server partition manager and partition magic server for Windows Server 2000/2003/2008. Server Partition software for Windows Server and None-Server partitions < freeware and very handy tool to keep.

or SSD Alignment < clean in this will wipe the drive - clean all will take longer but just clean will be ok. This also sets the SSD up for optimum use.

If you go down that track after you have got the machine set with security etc do this Optimize Windows 7[2]=Performance Maintenance < an absolute must.

It is possible I suppose that the DVD is corrupt but unlikely.

Maybe run a CD cleaner through the opto before to rule out dirt on the lens - sounds a bit preschool but it could be something as simple as that.

Now the other thing is I am going to suggest is to put the OS CD into the other machine and then see what is on it - see my pic it should have the same files as mine

Have you tried to reset CMOS? How To Clear CMOS (Reset BIOS). Then try to boot into BIOS, set optimized defaults with the DVD as 1st boot device and SSD as second device. Set the bios to AHCI, save and exit. If you are going to try a clean install, put the Installation DVD in the drive before you save and exit. A clean command with diskpart is all that is necessary. I never run the 'clean all' on my SSDs. The fact that it will not boot from the SSD leaves me with a concern about bios, unless it will not POST. I assume it will post, correct?

When setting the boot order, you will see whether bios can 'see' the SSD and the DVD.

Now you did say you changed the memory but just to make absolutely sure is there a chance you make a memtest disk and run that for a while?

Also I suspect maybe the mobo has gone south mate

Memtest86+ - Advanced Memory Diagnostic Tool

When you first installed Windows, did you install from the driver DVD or download from Gigabyte? Have you flashed the bios to the latest version? Do you have the Msata installed? Recheck your installation, make sure all standoffs are installed and that there are no standoffs installed that do not line up with the holes on the board. Make sure all power connections are completely installed and fully seated, especially the 24 pin and the 12v ATX 8 pin connection. Can you RMA the board to the vendor or do you have to go through Gigabyte? If so how long do you have to RMA it?
As a last resort, you can re flash the bios to the latest version downloaded from Gigabyte here. From that link, you can also download the latest drivers. I believe your board has a dual bios. If that is so, switch bioses, set optimized defaults and try it that way. Make sure your SSD in plugged into sata port 0 or 1, controlled by the Intel Chipset. If there are any diagnostic leds on the board or diagnostic lights, what are they telling you. I know, a lot of questions, but.... I would also recommend John's suggestion and try to run memtest86+ from a usb stick. You can burn the ISO of Memtest86+ to USB using Pendrive Linux universal USB installer.