When I turn on my computer, everything seems fine at first. After I open a program, the program usually doesn't run. Programs I've tried include iTunes, Google Chrome, and simply trying to open files stored on my computer.
After about 30 seconds, whatever program I'm using says "not responding" then crashes. After that happens, I can't even open the dock to shut down, restart, etc.... I can't open the file folders on my desktop, the entire operating system becomes unresponsive, then eventually crashes. I have to shut it down by holding down the power button.
I have tried restarting it several times. I have managed to open my computer in "safe mode with networking," but I need to be able to access other programs on here, and I would just like to be able to use it the normal way so I have my preferences, wallpaper, sound, etc.... In safe mode, I ran Defrag, deleted several unnecessary files, and deleted the computer game I recently installed that I thought might have been causing the problem. I don't have any other games on my computer, but I do have video files, music files, Photoshop, Illustrator, VLC Media Player, Chrome, Firefox, Microsoft Office, and some others, I can say which ones if anyone needs to know in order to help.
I found a thread where someone recommended going to the command prompts and typing in "sfc/scannow" and I did that, but it didn't work. I've tried doing system recovery but that didn't work.
Can anyone help me identify the problem and tell me what to do about it? I'm not very advanced with computer knowledge and I don't know a lot of terms, but I can answer any questions you have about what my computer's doing if that can help.
tldr: My computer doesn't work outside safe mode and I have no idea how to fix it, and I am a beginner with computers. Please help.