2 days ago i started seeing my computer act suspicious and slow down. It started freezes and everytime i clicked something it said (not responding). In the begining i didnt think much of it but now im fairly sure its a virus of some sort. after awhile it got even worse, when i turn on my computer it would take about 20 minutes for me to even be able to click on something. Now, it cant be used at all. Once i open it, a black screen with a bunch of computer things i dont know, at the bottom it says WARNING PLEASE BACK UP HDD OR SSD, HARDDRIVE MIGHT CRASH AT ANY MOMENT. i built this computer about 8 months ago, i have norton security but its not doing its job. My computer wont even work now. It forces me to open up the bios to fix something but i dont know what to do. I try to sign in but it brings me back to the black screen and now i cant even do anything. Please help, thanks.