Since I got the new battery, not getting as hot, no more blue screens. Local computer store said overheoverheatining my BSODs, but I ran into another problem. They said to charge the new battery la or eight hours for the first use, did that. Then tey said to use the battery until it was at 0%, to program the battery. Was doing that, after can use it on AC or battery and can switch as much as I want, charge 2-3 hrs. Except for one thing that arose jus a few minutes ago, PC suddenly shut off with new battery, on battery, when battery was still at about 20%. Not booting up on new battery at all now. Just shows a small flash of screen and shuts off again. By small, I mean 1-2 seconds. Any advice? Try AC despite what local computer store said? Would do eset and update and scan with MSE but don't have internet, and this that just arose.