Abnormal Boot Times

I'm currently using a Dell Optiplex 3070 SFF with an intel I3-9100. The work PC's here were on spinning rust for a while, and I finally convinced my employer to switch over to SSD's. They cloned the C discs to SSD's and installed them into the PC's. All the work PC's now have a boot time of around 30 seconds or so. All except this dell. It still has a boot time upwards of 3 minutes, typically falling in the 5 minute range. The specific SSD installed is a PNY CS 900 960GB SSD. There is only the SSD installed, and no additional HDD to accidentally boot from. It also takes strangely long to shut down, though I haven't timed it. Any clues? Even if not something nessecarily DIY friendly, I could at least take it to a repair shop, as the current one just kinda goes we don't know, but it works fine when booted, so use as is.