Wallpaper Hijack How Do I Know Everything That's Wrong With My Computer?

How do i know everything that's wrong with my computer? - wallpaper hijack

My laptop was recently infected by viruses, Trojans and Spyware .... I had a series of anti-virus and anti-spyware programs that remove the ability to download ...

but .. seems there are some problems:
1) I can not get my wallpaper ... and options for change will not work

2) sometimes shows a blue screen suddenly ...



I have a software "wallpaper remover diversion" that would solve my problem ... Wallpaper

But the thing is ... How do I know what is wrong with my computer ....? so that you can download software to fix and operate my computer normally .....