Everything seems to be under control now... at least that's what I'm hoping for. If things don't get better in the coming days I'll have to look at what you both said.

>>Sounds like you have a hardware problem, may be memory. Check the windows event logs to see if anything is recorded.
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>Could it also be a virus?
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>>>I had one blue screen recently. This never happened before. Last automatic update was done on the 13th of march. KB 946041
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>>>In the past days I had many problems with my laptop. For example it rebooted on its own. Anybody else had any problems that could be related to that update?