Location of your two drives, and the second one is under the battery.



As for cloning either of the drives before they are pulled out of the laptop, use reflect (going to to need a USB3 to sata cable).
http://www.macrium.com/reflectfree.aspx


And, if you clone the drives in the locations they are now, and replace them with the cloned drives in the same locations, you will not need to change any of the laptop settings for the boot drive.  Hence clone the drives, swap them in the laptop, then run Samsung magician to load the needed items for the Samsung SSD drive.

http://www.samsung.com/semiconductor/minisite/ssd/download/tools.html


One last thing, and with the age of the OS the C drive, might be better to just do a fresh install of the OS to it, and them connect the old drive to the laptop with the usb to sate cable to copy the non OS related items to it that way instead. The down side, if you will need to reinstall all the other programs back to the boot drive the long way instead.

Skip to 3:00, then 3:50 on how to remove the primary drive  and to install the new one in the below video.
The Sata drive bay  to the right (centerish) is for a  secondary type drive.


Also at the 5:53 mark, there can be a third mSata drive in the laptop as well.
I bring this up, since you may have a 256 mSata drive in the laptop that is being used as the boot drive (C), and only one HD drive that is being used as the storage drive in the center bay instead.



So, Remove the left hand back cover, remove the screw for the opti drive, slide it out, and you will be staring at the second hard drive location your trying to find.

But, with the year of the laptop, would bet that the C boot drive is actual a 128g mSata drive top right, and you have only a single HD drive in center storage bay isntead.   All is not lost if you install the Evo 850 into the primary boot drive as the boot up drive, and you just need to go into the Bios to designate the primary drive as the boot drive (isntead of the mSata drive), and this will leave the secondary drive in that center bay, and even the mSata drive as a secondary drives for storage  isntead.


Or just leave the 128g mSata drive in play as your boot up drive, and add the new SSD drive in an extra storage instead.   The downfall to this, is the Evo 850 is a hell of lot faster drive than the M sata drive in play in the laptop, so your not really gaining much this way instead.

So again, would do the Evo 850 in the primary drive bay with the OS on it in the primary drive under the opti drive, and go into bios to use it as the boot up drive.  Install the HD drive you have in the storage bay drive to the right, and on the mSata drive in play, used it as a faster storage drive   as well.  The msata drive is a hell of lot faster the the spinning HD, but not as fast as the evo 850 instead.

Double post

No worries, but did you find a Msata in play?


If you did, do a speed test between it, and the new evo-850.
Although the evo-850 is the faster drive, the two do not use the same controllers, and with the age of the machine, would not find it strange that the older mSata has a faster transfer speed that the newer Evo-850 on our machine isntead.

Not a bad idea with the age of the machine and will give a chance to blow the dust out as well.

Don't remove the CPU or GPU parts, since if you do, will need to reapply therma paste.
As for the cooling  fans, hold them from spinning when you are using the can'd air.  The canned air will end up over spinning the fans in speed/cause unneeded wear of the shafts to their bushings, and they will start to make more noise them normal isntead.


Also, video walks your through pulling the Key board, so you can get both sides of the board, to free the machine  from dust bunnies with canned air  that are breading in it.

scroll down towards the bottom of the page,

http://www.eurocom.com/ec/vgas(1)ec

Yep, 980m would have about a 224% boost over the 675M, but your talking a Grand to do such isntead.

On the positive note, prices are always coming down as new GPU's come out, so give it some time, and may find that the price drops way down for the kit isntead.

On the bad side of the math waiting for prices to drop game, as new games come out, they are built to tax the new cards that are coming out, so although the 980m may have the needed speed for the current game, waiting to buy it later, it may not have the needed speed for the game being offered then isntead.

Hence gaming systems are nothing but a money pit, since shortly after you buy or build one, new systems/GPU's come with game built for their increased speeds, and you ending have to upgrade the gear to stay current with the times instead.

So on that note, isntead of dropping a Grand for a new kit and card, check around for used gtx980 cards that someone pulled to upgrade to a faster card isntead.  Prices for one used are only around $600, and if you checked the link I listed, they do have the needed heat sinks and bracket for the card on the cheap isntead.

[url]http://www.ebay.com/itm/Nvidia-GTX-980M-8GB-GDDR5-N16E-GX-A1-Maxwell-MXM-3-0B-Card-/222222922088?_trksid=p2141725.m3641.l6368[url]