Hi everyone here, i need some suggestions, noobie here...
Im using lenovo y510p, im looking forward to add 1 ssd into my laptop.
It now has 1tb hdd on the board and a m.2(ngff) slot,
1) If i buy a normal 2.5" ssd to replace the hdd inside, n shift the hdd to my ultrabay (with the purchase of hdd caddy), will the warranty get voided? do i have to reformat my windows if i were to use the ssd as my windows boot up drive?
2) if i buy a m.2(ngff) ssd n slot it in, could it be the windows boot up drive or only act as a storage drive?

Budget is kinda limited, i saw m.2(ngff) ssd is so expensive, it is like 3x the price of normal 2.5' ssd

*extra question, when i just starting up my windows 8.1 laptop (or sometimes randomly), the disk usage get 100% for like 5-10minutes, why is it like this? is it that i torrent too much n hurt the hdd?