Lately I have been having issues with my computer, just after starting it up and logging in to minecraft it crashes most of the time, it does it with other programs aswell. I have had a look through task manager and found that it is using aroung 1.5 GB of memory when not doing anything and about 1.7 GB when playing MC. Cpu usage is also about 15-30% when doing nothing. I also saw in the processes tab that something called "svchost" is using alot of resources. I googled it and found that is a memory leak bug or something to do with windows. I found alot of online tools that fix it but I don't really trust them. So I don't know what to do. I also found something called "trojan.win32/agent" when scanning with avast but I don't know what to do about it. Something else wierd is that when avast goes to scan C drive it crashes. I don't know what going on and I don't know how to fix it either. HALP PLZ.