Microsoft Corp. asked a federal judge to dismiss the claims in the action-law suit filed against them regarding the “Vista Capable” campaign, saying the plaintiffs don’t have enough evidence to prove the program caused an artificial increase in PC prices, or that Microsoft had unfair benefits from these PC sales.

The motion was accompanied by another motion, in which Microsoft rejects accusations that Windows Vista Home Basic is not a genuine Windows Vista. The company explained in the filling that although it lacks some features that can be found on premium editions of Windows Vista, Vista Home Basic is part of the Vista family, and its features have been marketed accordingly.

The scandal that broke out not only revolves around Microsoft’s name, but also around CEO Steve Ballmer’s name. The plaintiffs claimed Ballmer was well aware of the changes made to the Vista Capable campaign, and demanded Ballmer’s testimony.

Everything goes back to 2006, when according to the plaintiffs, Microsoft executives lowered requirements for Vista Capable PCs, so as to include Intel’s stock of 915 chipsets, which were only able to run a basic version of Vista without certain features, in the Windows Capable campaign.

Pushing for lower requirements may have satisfied Intel in the end, but it resulted in dissatisfaction among other chipmakers, such as HP, who accused Microsoft of having bowed to pressure from a partner left with a lot of PCs that were not Vista Ready.

According to e-mails made available in court documents, many execs warned that dropping Windows Vista requirements would confuse consumers, yet the changes were made. While a judge dismissed earlier this year claims that Microsoft deceived consumers, the plaintiffs are pushing now for Microsoft to be found responsible for influencing prices.