You were right! I did the factory reset, then when I tried the update to version 2.7 all went well. If anyone else has that problem, that is the answer. It is a great pity that Medion doesn't include that in the instructions for the update.
TL;DR - It seems to me that the problem has completely disappeared after I uninstalled the "McAfee Mobile Security" app.
After much investigation (believe me, a lot) onto all sorts of different forums and websites, and going through all sorts such as finding a temporary solution by trying to manually add my WiFi network or changing my WiFi name to trick my phone into detecting the network several times (which would only let me connect once - if at all, and wouldn't let me reconnect after disconnecting for whatever reason like going away from home or Airplane Mode or whatever etc.) I finally came across a reply on this website that went like this:
"I've just had this problem on my Xperia Z2 the last 2 days. Did a factory reset then the problem immediately restarted when I reinstalled McAfee - seems to have kicked in since they did the last McAfee update 2 days ago. Waiting for the next update to see if it'll be fixed. Funny that it only happens with 2 of the 3 networks I have set up at home (thick stone walls)"
So from this I clung onto the hope that maybe it has something to do with McAfee Mobile Security as - if I do recall correctly now - it was around the time that I'd set my account up that these problems began to bother me. So then I figured I'd try uninstalling and see what happens in hopes that it actually gets me somewhere and it turns out that it did.
P6679 is more of a model line then a specific notebook, when I google it I find different versions of it, some with both an SSD and a normal HDD. This would mean that there is room for at least 1 2,5" harddrive, and 1 SSD.
I'd expect the SSD to be M.2 (I've not been able to find any conclusive info on this though), M.2 is not interchangeable with a regular 2,5" SATA harddrive, it is different in physical dimensions and had a different connector.
I think you'll have to ask the reseller of the exact model you are looking at if the SSD in it is a M.2 or a 2,5" SSD. If it is M.2, you will be able to mount a 2,5" harddrive. If it is a 2,5" SSD, then a hdd tray to replace the optical drive might be an option.
You can find parts for a E6239 (I'm not sure if this is the exact version of the E6239 you have, but I'd suspect they all have the same cable) through this link.
My guess is you need:
Cable, Powerboard cable, internal
But perhaps you could contact Medion directly to verify this just to be absolutely sure.
Going by the manual, there is indeed no notification led present on this phone, I also dont think it is possible to add it since as far as I can find the LED is physically not there.
Notification sounds normally can be turned off through the android settings, or through the settings menu of the app that gives the notification, I'm not sure what app or setting gives a notification after terminating a call though .
I have solved the issue. There were 2 issues.
First, I removed my CPU and noticed that the socket had 3 or 4 bent pins. I used a small needle to bend them back into place. After that the I had no more "usable" ram indication. However the 2x4gb RAMs did not work. Only 2x2gb rams, or 2gb+4gb.
This was beacuse my 4gb RAMs were 1600mhz, and I have been informed that the MS-7708 Motherboard cannot support anything other than 1333Mhz.
I had a friend sell me his 2x8GB rams with 1333Mhz (even though I know my motherboard can only go up to 8gb total, but i eventually will change my motherboard, so I already have 16GB there to use) and now it states a full 8GB usable.
Thanks for your help everyone
So the guy from the smash and grab, cough cough, I mean my friend, said her son was messing around with the laptop and he said he put a password of QWERTY on there but wasnt sure what he was doing. Anyway, i put QWERTY into the pasword box and im in
problem solved result!
hope this helps somone, because "daddle" certanly wont!