PC keeps on crashing.

[PauloRegala]

I really need help on this one guys. My english is bad so please ignore it. It all started this Saturday. I have an i5 4460, gigabyte b85m hd3, 8gb of dual g skill ram ddr3, 240gb ssd, 1gb hdd for storage, corsair cx500m and an xfx rx 480. I was playing Apex Legends when suddenly when I alt tabbed it won't let me back in the game. So what I did was restart the pc itself. When I booted it back to windows it started doing something crazy. The mouse will only work after I click any button once. After that the i have to use right click for a normal click and the middle mouse button for a right click. It also showed the there's an issue with the audio (red x on the bottom right). After about 20 restarts I gave up hope and did a reformat. After that whenever it goes to windows welcome screen the monitor quits working/shuts off but the cpu is still on. CPU fan still spinning and also the lights on my gpu are still on and so are the fans. I moved the hdmi cable to the motherboard to use the integrated graphics and still got the same result but this time no display at all even after rebooting it. I'm not sure what I did that day but I got it to work in time before I went to sleep and was able to use it a good day for work. While I was playing and I alt tabbed again it started doing the same thing again. Monitor is off but the cpu/gpu/fans are still working. I tried to troubleshoot it the best I can but it still does the same thing. Whenever I press 1 key from my keyboard the monitor shuts off. I already tried system restores and I also tried to repair it but no luck. I tried to reformat it one more time but  after that I just gave up. Won't even go past the welcome screen and monitor shuts down. I decided to upgrade my system. Here's what I have right now. i5 9400f, msi b360 gaming pro carbon and 16gb dual channel g skill trident z rgb 3000mhz. So i popped everything on the my case. Powered it on. It booted to the welcome screen and the monitor shut down right away. I was like o crap not again. I did a fresh reformat just to be sure and it was successful. It booted to windows okay. Was able to download the stuff I need for work and software I use everyday. I'm not sure why/how but it's not detecting my hdd luckily it's detecting my ssd. It's okay for now I just want something that works. What I noticed immediately was my ssd  boots very slow and takes at least 2 minutes. I already reset the bios to default and disabled fast boot because it's not doing what it's supposed to do. I was playing Apex legends for a good 5-10 minutes when I smelled something burning. I checked the ingame overlay and I don't see anything unusual. Temperatures are normal. I decided to quit the match and after I clicked exit to windows the monitor shut down again with the cpu still running. I was like wtf not again. I don't know what else to do. So I reformatted again because it will not boot to windows and it doesn't boot to bios sometimes. SO right now it works but I did not install any games just the stuff I needed for work a browser. Do you guys think it's the power supply? I don't have any more money to spare and I don't wanna buy something that is not guaranteed to end this issue. Any help is really appreciated guys. Sorry for the long post. Thanks.