Was the bare-bones set up that I suggested in my reply #2 ever done if yes what was the result please, if no it may be necessary to do it if after checking the Ram as suggested below if there is no change.
How to physically test your Ram.The following checks require the computer case to be opened so take the following
safety precautions 1st, disconnect the power cord from the wall socket and take anti static
precautions before touching anything inside, you can do this by touching a bare metal
part of the case.
Have a pencil and notepad to hand.
Remove each stick of Ram and blow out the memory slots.
Insert the first stick of Ram in memory slot one, reconnect the power and in the case of a desktop computer the video to screen cable.
Power up the computer and see how it goes.
Make a note of the results.
Repeat the procedure until the first stick of Ram has been tested in each memory slot and the results written down.
Remove the first stick of Ram and put it to one side on top of a piece of paper with the number one on it for identification purposes.
Repeat the procedure with all Ram until each stick has been tested in all slots, the results written down and the sticks identified numerically.
Please note that some MBs (motherboards) will not boot unless there is Ram in slot one so please refer to your user manual.
Can you also temporarily disable the auto re-start so that if it blue screens while you are doing the testing you will be able to write down the stop code details for us "how to" below;
Just before the Windows 7 splash screen shown above appears, or just before your PC automatically restarts, press the F8 key to enter Advanced Boot Options.
You should now see the Advanced Boot Options screen as shown in the attached .jpeg below.
Using the arrow keys on your keyboard, highlight Disable automatic restart on system failure and press Enter.
After disabling the automatic restart on system failure option, Windows 7 may or may not continue to load depending on what kind of Blue Screen of Death or other major system problem Windows 7 is having.
Post here any stop codes that you may receive please.
A list of Stop Codes provided courtesy of cheathawk1 http://www.geekstogo...ath-stop-codes/