Marami ka sigurong installed application boss kaya kahit boot up pa lng 65% na agad na consume sa RAM mo. Then, normal lang yan na mataas ang kain ng RAM pag nag bobrowse ka with plenty of tabs. Malakas din mag consume si chrome talaga. Reformat mo na lng tapos minimized your installed apps according sa capability ng laptop mo or pwede ka din mg upgrade if may budget naman. Pero ito baka makatulong, delete mo na lang temporary files mo, type %temp% and prefetch on run then delete all files para ma reduced kahit konti mga residual files mo. Hopefully it can help you. Thank you.