PC was slow, froze and now a blue screen

[Jesper_3]

Operating System
Windows 10

Computer Specs (PSU, GPU, CPU, RAM, Motherboard)
i5 6500 GTX 1060 6GB 16GB RAM Asus Z170 WD Blue 1TB San Disk 250 GB SSD

Description of problem

Hey,I have a selfmade PC for over a year now and it worked flawless. But the last week I sometimes got some FPS drops in Rainbow 6 and since today I got some problems in Planet Coaster. I didnt play the game for weeks but bought a DLC and wanted to play again. Where I first got solid frame rates, I now only got 15-20 on low settings. I played a bit, but it played really choppy and after 20 minutes it suddenly froze and I couldn't do anything. Alt-Tab, Ctrl-Alt-Del or Shift - Esc. I turned the PC off, but suddenly got a blue screen stating there were problems with starting up and "Startup cannot repair this computer". Both drives are still visible in the BIOS screenThanks!!

 

[xizzboy]

Since FPS is handled by GPU and CPU and SSD affects your loading times, i don't know if could be a dying SSD or not, there're lot of people with suddently low frames on games after they install a SSD, but unless you changed something on your system recently it's not the case. You overclocking your system? When it froze you still able to move the mouse cursor? Otherwise could be CPU/GPU overheat, an overheating GPU would most commonly play fine for a few seconds/minutes, then performance will decrease substantially as temperatures increase to unsafe levels, avoiding damage. System keeps shutting/slowing/froze down are symptoms, the bad startup happens because you did a hard-shutdown and not a normal shutdown through windows. Download HW monitor and check temps. Check the cpu/gpu thermal compound or dust on heatsinks blocking airflow.