salam to all, meri ek problem hai ki mere computer mein 2 ram 128+128=256 lagi thi ek ne to kaafi dino se kaam karna band kar diya hai aur ab ek hi chal rahi hai aur kabhi kabhi ye bhi 64 MB ho jaati hai tab computer ko restart karo to 128 ho jati hai kya wajah ho sakti hai please batayen.