Well you've learned some important lessons Linny, there's one golden rule before a clean install.
Make sure you have all the correct necessary drivers prior to commencement.
After a clean install, Immediately install the following drivers in the following order before you do anything else at all.
Chipset Drivers
Audio Drivers
LAN Drivers
Video Drivers
That said, the pain you are now experiencing is part of the learning process, knowledge is acquired through hard work & we've all been in your situation at some point during our learning cycle.
This is just a little observation & not a criticism Linny,
You tend to go a bit gun-ho once you have a little idea of what's what and tend to try all sorts. Better to get the required information in full before you start and don't try your own sites and software programs alongside the advice you are given here as it tends to confuse the issue leaving others unsure what exactly you have tried ;)
For example, If I remember correctly from one of your earlier screen-shots you had something like 3 manufacturers wireless drivers installed (They can conflict & drive you crazy).
Drivers above anything else are the most finicky devils and the incorrect ones can cause untold grief.
You are doing this for a friend or acquaintance and causing yourself serious stress? If you are determined to continue you might consider starting fresh (much less pain than trying to undo what you might have done incorrectly) or just return it and say you done your best.
If it were here know I would
Make absolutely sure I had all the correct drivers first (Not two or three different ones and hoping that one works).
Wipe the system and install again.
Install those above mentioned drivers in the order mentioned above.
Good Luck!
