Window of any program is black or white after maximizing it and the computer is very slow until the actuall view of program is drawn (it takes at least 5 seconds). This occurs after working for a long time in some RAM consuming software or after resuming Windows from sleep. This is how it looks like:
My system: Intel core i3-3120M 2.50 GHz RAM 4 GB
Previously I had a computer with i5 and 4GB RAM and these things almost never occured. So is it a RAM problem or I need a more powerful processor ?