My pc got realy slow after a few changes

DubleAX

Distinguished
Dec 6, 2012
38
0
18,530
Hello
lately my pc got a few changes that made it freaking slow
First ive heard that my pc uses only 3.50 ram out of 4.00 because i have windows 32 bit and 64 bit is better
so ive used my windows 7 disk that i had which had all the windows 7 versions [it had 32 bit and 64 bit of any version like ultimate home premium etc]

ive accidently installed windows 7 ultimate 32 bit version again [dont ask how]
after that i went and installed windows ultimate 64 bit after i realized i accidently installed 32 bit again
after that ive realized my pc got slower and sometimes have some mega lags and i realized that in the task manager that chrome.exe [google chrome] was opend a lot of times and used 40-60% of pshycal memory
and ive heard 64 bit had a lot of bug and stuff and 32 bit was better
SO again ive installed windows 32 bit on my pc and now its worse my pc is a slow as hell and many proceses in task manager are multiplied like chrome.exe iexplorer
svchost and a lot more and my pc is realy slow what should i do
and please help me step by step cus im new here and im not an expert in this
[by the way sorry for the bad language]
 

DubleAX

Distinguished
Dec 6, 2012
38
0
18,530


errrrr how do i do that