Vista Disadvantages:

  1. Requirements high, too hot deal:Windows vista consumes a lot more resources than its predecessor windows XP. For vista Aero to work, you need to invest something more than what you would have expected to invest before. The graphics card requirement is quite high. The graphics card must be of DirectX 10 supported. The required minimum graphics memory on the graphics card is 128 MB. For better performance, graphics memory must be of 256 MB. The minimum hard disk space required is 20 GB for installation of Windows Vista. Processor speed is also expected to be high for Aero to work smoothly without causing any hiccups. The memory requirement for Windows Vista system is high. The system will work smoothly when one has got RAM of about 2 GB installed. Totally, I would like to say that, Windows vista eats up lot of resources, than its predecessor, the Windows XP.

 2. Issue with the Drivers compatibility :One of the common issue with the windows vista is that the ,device  drivers compatible for windows vista are not released by all the manufactures of the hardwares ,so many of the device such as graphics card and webcam had compatilbility issue with the windows ,  before purchasing  any  new device we  need to check out for Vista compatible or Vista ready logo, which is put up on the device.  

3. Regarding price :

The price for  Windows Vista  editions are also  high. Ordinary users cannot thus, have a look into all the features of Vista, which is only available in the Ultimate Edition. Microsoft seems to be not so interested in country wise markets. The prices are set according to the US market. However these prices are on higher side for developing asian countries. Microsoft should set the price of Vista as per the market.

So taking a lesson from all the previous disadvanges or demarits of windows vista , Microsoft tried to removed  these things in the windows 7 .

First of all  to remove  drivers compatibility issue  in the winodws 7 , Microsoft added  a feature called as XP mode , suppose if  some of the devices are not working in windows 7 , we can use this XP MODE and  solve the issues concerned with device  drivers .

And  far as the hard requirement for the windows are concerned , vista users are easily shift to the windows 7 as  windows 7 has almost the same hardware requirement as windows 7 .

The only issue still left with the windows 7 is regarding with the price of the windows 7 Operating system , According to an senior official from Dell , price tag for the windows 7 is much higher as compared to windows vista .