Perverse laptops and an unexpected guest

The title of this post is probably more interesting than its contents, but there ya go. When I went to sleep last night, there was a unexpected guest in my bedroom. I certainly didn't expect to see this in the middle of a winter night:

Aglais Urticae (EN: Small Tortoiseshell, NL: Kleine Vos)

As for the laptop, well my boss asked me to take a look at an old laptop of his that didn't work any more. Actually, it does work, but it has some perverse tendencies... it will only work when I tilt it by touching its bottom in a certain way. Probably a loose contact somewhere.