When you say fixlauncher utility you mean the repair utility at this link ?
Take the system to full clean boot per this link and advise if the launcher (run as administrator) at least appears ok or not
Yes i have already tried the repair utility from your link.
I have just performed a clean boot as well, but i still can't start the launcher :/
Ensure launcher.exe is in the antivirus and firewall and set to tun as administrator
try
Press the [Windows] Key + [R] at the same time
Copy the following in to the text box and press ok
%localappdata%
now once here scroll down and delete swtor and Swtorperf folders , if you have any custim UI you want to save go into the swtor folder in that location and copy the GuiProfiles folder to the desktop so it can be pasted back later into the same location once the game works again.
Hum ... i don't have any swtor and Swtorperf folders in AppData/Local
Hmm those folders should exist in the appdata location if the game has been played on this system before.
Can you make a new windows administrator account on that system as a test and log into this new profile and see if any change with starting the launcher
