Problem with my internet connections...?

[girl]

so i got this dell laptop, gettin prety slow and my family doesnt register or care to fix shiz. so whenever i click the 'e' button, it will say theres some problem and it will x out when i click the 'close program' thingy pop up. what i do do is turn off the internet connection, then press the 'e' interenet button, then turn on the internet connection sliding thing, then go to whatever site i go to. but it wont let me have more then one tab, if i do, it will do exactly what happens when i first want to go on the internet, pop up, close program, then repeat.
so i think ya, my comps infected, but i CANT BUY anything to fix it, is there any free shiz i can use for protection of viruses or whatever, nothing big brother like...no buying or registering...free of fuggin charge....and if that be not the case why my internet is sucking, then what may be the problem and how can i fix it....
any help will be appreciated. thank you for your time.
oh i forgot to add, my lap heats up easily...as i think most do....and if not, why do i have this lap top.
so i have a book (that wont blow up in flame) that i put under it, and i would have to adjust it to make this stupid device breath and cool down...so what and where and please help with some advice about faning or any device that can cool down my lappy top....i feel like i ask to much...but im personaly depressed and thought this was a fast way to get a answer...thanks anyone