Thanks, still not working thou.. I did the following:
1) unistalled my client using the uninistaller file;
2) downloaded the latest version from your link ("windows installer...");
3) i went to .../appdata/roaming/electrum
4) ive deleted two files: "recent servers" & blockchain headers
5) ran the .exe again. Now the window "2.5.4 - default wallet - something" was alive for ~5 sec, the died again. Back to what we've started with)
Why you deleted recent servers and blockchain headers ?
I'm pretty sure those are not the CONFIG files .
Please take a screenshot about your Electrum AppData and post it here since I don't have it installed on my PC .