*****Acer Nitro 5 (AN515-42)*******
Ever since I got an ssd installed and had my thermal paste replaced on an Acer service centre, My laptop is showing a new problem now. Sometimes when I boot up on battery power, startup takes a whole 2 minute(not normal for a ssd) and when I open task manager it shows my processor at 0.38GHz contantly.(Normally the processor remains at 1.55Ghz at battery power) I tried everything like rebooting,resetting BIOS, startup repair and nothing seems to work. The only solution I found is by connecting to a power source which bumps the processor to max (2.00-3.14GHz). The processor now reverts to normal 1.5GHz when again removing the power cord. I really need help with this weird situation