more computer help... >.<;

[cillia]

So this is the second time this has happened to my PC. Last time i had to reinstall windows. ]=

Anyway, my PC has been having lots of trouble for the past 2 months or so. (Trojan Horses kept infecting my computer, when i erased them they would just come back) So about 2 days ago i saw a folder on my desktop that was a 3d model editor that i use (Pebbles knows what it is) and i remember that my computer started having trouble after i put that folder on my desktop (the program isn't one that you install, its just an .exe file) so i decided to delete it.

...I guess that wasn't a good idea. The next time i turned it on (a day later) i managed to get onto my desktop and start opening my web browser and stuff. Then randomly my screen flashes a BSoD and restarts. Now it keeps restarting and whenever i try to get into Safe Mode it just freezes at the screen where its loading the files for Safe mode, and then restarts after like 3 minutes. When i try to just normally turn it on, it goes to the checking disk screen. Once it completes it goes back to the restarting cycle, and if i decide to skip the disk checking, it just restarts again. Is there anything i can do to fix this?

(i can take out my hard drive and put it in my moms pc and then copy my files that i want onto my portable HD)

And if i need to reinstall windows, is it better for me to just get a new PC? This PC is only 2 years old and I've had to reinstall windows onto it about 4 times. =_=;...