Powershell 1.0

Every time I charge my laptop I get this powershell prompt: Exception calling "Load" with "1" argument(s): "Could not load file or assembly '2558120 bytes loaded from Anonymously Hosted DynamicMethods Assembly, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies...

I need a small, thin and light 14 inch laptop(preferably, 13" will do) with at least an i5 and a 940m. My budget is $1000. I am a first year college student studying software engineering. I was thinking about buying a yoga 710 -...