Replaced power supply, now pc won’t wake up from sleep mode even after fully disconnecting from power

I don’t really know what I’m talking about so I included all details that seemed relevant. TL;DR is in the comments. To make it easier to read I’ve bolded the symptoms and italicized my troubleshooting attempts.

I have a custom pc running Windows 10, and my Corsair CX550M power supply died to a water spill this weekend. Geek Squad determined that the other parts were still good and said a TX550M that I found online would work as a replacement. I took it home to install it myself because my friend who built the pc thought I could do it. I had some issues connecting the sata cables to the SSD and had to reset the BIOS, but got it running this morning.

I used it for hours with no issues, but after coming back from lunch, **I couldn’t wake it from sleep mode. My keyboard and mouse were getting no power and the power button was unresponsive, I had to turn it off with the toggle.**

I googled it and most people say you need to change some settings while it’s powered on, but **when I power it on, it acts like it’s still in sleep mode, and nothing is responsive.**

*I saw a Reddit comment saying they fixed it by plugging their sata cables into different ports, so I tried that.* **The computer turned on like normal once and I went to the bathroom, and when I came back it was back in sleep mode and unresponsive.**

*After switching the cables around a few more times and checking all the connections were tight*, I had left it running in sleep mode for a bit while I started typing this, and **after several minutes it acted like it was just finally starting to turn on, my keyboard and mouse had power, the boot screen came up before going back to black, and now all the fans are running and the rgb lights are on the setting they are when it’s on, but nothing is getting power and everything is unresponsive.** After about another 10 minutes it just started to do this again and I tried mashing to open the BIOS menu but the boot screen didn’t appear before it cycled down again.

Does anyone have any thoughts or anything to try before I take it back to the Geek Squad and hope that they can figure out what I screwed up? There are several different connectors on my sata cable and if there’s any difference between them I can’t tell, but the one on the end says benfei and none of the others do. *In addition to the SSD there’s something else with a sata port on it, I don’t know what it is and my friend doesn’t remember, but unplugging it didn’t help.*