I have an Acer V5-561p-6869 that will beep once and freeze a few seconds after I unplug it from wall power and it's on battery. The cursor will move but nothing else can be done, noting can be selected, opened, moved, etc. Everything is stock other than I replaced the hd with a 500 GB SSD hard drive and it now has 16 GB of RAM. The laptop was working fine after installing both of those items and has started doing this well after they were installed. I went through and made sure all the windows settings were the same when plugged in and on battery power which it is. Thank you for any help.