I think I may know why your computer fails at start up. Its a nasty piece of software that doesnt seem to be found by the anti virus's yet (even though its pretty old)
I believe it is called Microsoft Windows Vista.... I feel your pain, I use the 32 bit version.
Apart from replacing the OS there is no fix, however this may ease the pain.
click the start bubble
In the search type "cmd" without the qoutes to bring up Command Prompt in windows.
when in Command Prompt type "telnet towel.blinkenlights.nl" again with no qoutes,
sit back and watch...
Youll feel much better Knowing MS took the function out....
If you are curious then it may also annoy you but it would have shown this
www.asciimation.co.nz
I miss XP. *drifts of with memories*
Bye the way Welcome to GOG, I hope I didnt come across as an ass, I usually let people get to know me before I do that :-P