I have read on various sites that 32 bit windows cant use all of 4 gb of ram . It only detects 3 to 3.5 gb of ram. I have also read that if we enable PAE then it is possible to use all of 4 gb of ram. Some places i have read that we have to use 64 bit windows as a solution. So if anyone could clear up the doubts i have. Is all of 4 gb of ram possible to use with 32 bit windows?