Answer to "How do I upgrade my ram to 8GB? without computer freezing?"I had the same problem after upgrading from 2x 1Gb to 2x 2Gb to make Gb. apparently the RAMs sold to me weren't knew and I was not aware. freezing and restarting for about 5 times in 24 hours I carefully removed the RAMs, took my body spray (in place of methylated spirit or any ethanol) and soft toothbrush. I gently 'washed' the RAMs with it and placed them back about 10mins later More than a week and no freeze again!