Early this month, I began having issues with a Sony VAIO (VPC-EB2JFX/L). First, there was an issue with the charging adapter. It began beeping, and stopped working, so I purchased a universal laptop charger as a quick replacement. This worked fine for a while. A while later the laptop began to get "fussy" about when it would charge, and would sometimes only charge if the cord was in a certain position. This lead me to believe that this was a problem with the adapter itself, I purchased yet another one. By the time this one got here, the laptop would not charge at all with either of the two new adapters, nor would the orange charging light turn on. It was only after that when I checked the voltage from both adapters with a multimeter, and found that they were outputting the correct voltage without issue. From there, I decided that there may be a problem with the charging port. I disassembled the laptop, and checked for continuity between the outer port and the connector which connects to the motherboard. It checked out fine, and the voltage at the motherboard connector was reading correctly as well. Finally, I thought perhaps this was an issue with the battery. Unfortunately, the local battery shop wasn't able to test this particular laptop battery simply because of the brand, though I can't remember their explanation regarding that. Nonetheless, I decided to order a new battery. It just came in yesterday, and to my dismay, the laptop is not charging with the new battery either.
Could this be a problem with the motherboard? Or maybe there is something else that I have missed, or haven't tested? If there is any other information that I can provide, I'll be more than happy to do so.
Any help with this matter would be very highly appreciated.