I can't find any information on a AMD made motherboard A88F2EKS (PO).
Is this a OEM prebuilt PC made by AMD or by some other manufacturer?
Best I advice I can give you is open a AMD Service Request (Official AMD SUPPORT) and asked where you can find information on that OEM AMD Motherboard from here: https://www.amd.com/en/support/contact-email-form
Also looking at your SPECCY data, if it is correct, you have a defective PSU.
+3.3v - 1.968v Minimum 5% tolerance is 3.135v
+5.0v - 3.347v Minimum 5% tolerance is 4.75v
+12v- 8.112v Minimum 5% tolerance is 11.4v
With those reading the computer shouldn't even boot up.
EDIT: As an example, I have an 8+ year old Corsair 850 Watt PSU here is are my readings from SPECCY: