Strange shutdowns and disk read issues

[Screens here](https://imgur.com/a/UCOOD)

Windows 7 4GB RAM CPU info in the screenshot

Over the last week or so, I have been having a strange issue where my computer will shut down in the early morning hours. Sometimes it will start up just fine, sometimes it starts up with a disk read error, and sometimes it starts up stating that Windows was shut down incorrectly. Initially thought it was a heat issue. I opened the tower and sprayed out as much dust as I could find with a can of compressed air. It doesn't seem to have made much of a difference. Highest CPU temp I've seen on a restart was around 60 Celsius. System temp doesn't seem to get much above 35. Last night was the first time I witnessed the computer having issues while being used. Load times became an increasingly long over a few minutes, and then the computer became unresponsive. I tried to launch the task manager, however the computer did not allow that for quite some time. Eventually I was able to get the task manager to load, it stated that the game I was playing was unresponsive, but did not allow me to attempt to end the task. Again after a few minutes I was able to get prompt to end the task let the computer became entirely and responsive at this point and required a restart. The attached screenshot is the screen that appear immediately after the reboot. I've also included a screenshot of the system details. Please let me know if you need any additional info.

The previous issue I had with this PC was that the power supply had voltage regulation problems and fried a hard drive. I have since replaced both power supply and the hard drive (now a SSD). The PC went without issue for a number of months.