Bestineu

I plugged in earphones to a used computer w/monitor and in the Sound Playback devices , they did not appear but they were working and the Speaker device showed sound being played from them. After I unplugged the earphones, the Speakers still showed sound being played but the monitor speakers were no longer working with no sound actually coming out. Can't hear sound unless earphones are plugged in. The bar next to Speakers keeps showing sound being played no matter what, earphone plugged in or out but only hear sound with earphones. it's like - when I plugged in the earphones, the computer forgot what it's old speakers were and replaced it with my earphones, then when I unplugged them, the monitor is still plugged in so it doesn't recognize that the earphones it never recognized in the first place were unplugged? i tried troubleshooting, restarting computer, plugging, unplugging, normal google searches but nothing worked. anyways, please help fix!

I plugged in earphones to a used computer w/monitor and in the Sound Playback devices , they did not appear but they were working and the Speaker device showed sound being played from them. After I unplugged the earphones, the Speakers still showed sound being played but the monitor speakers were no longer working with no sound actually coming out. Can't hear sound unless earphones are plugged in. The bar next to Speakers keeps showing sound being played no matter what, earphone plugged in or out but only hear sound with earphones. it's like - when I plugged in the earphones, the computer forgot what it's old speakers were and replaced it with my earphones, then when I unplugged them, the monitor is still plugged in so it doesn't recognize that the earphones it never recognized in the first place were unplugged? i tried troubleshooting, restarting computer, plugging, unplugging, normal google searches but nothing worked. anyways, please help fix!

I tried searching no post problems but they all refer to building a new computer and probably not having something plugged in and even though mine might just be broken I dont understand how it broke or what to do: someone spilled a very little bit of milk in the tower of my PC. I opened it and used toilet paper to wipe it up. the milk landed on the graphics card mostly and a little on the fan of the vertical motherboard from splashing. I let it dry after that for awhile then turned it on and it was working awhile later the PC crashed with the blue screen and restarted. once it restarted, I opened the internet and had the bluescreen once again. after that, when I was typing my password to log in, it crashed. next time after that, it just stayed at a black screen and no POST. I turned off the PC and let it rest for awhile, unplugging the power. when I came back and turned it on. all the fans started and the LED on the tower powered on but my display stayed black and my mouse/keyboard with LEDs did NOT power on. since the video card was what mostly got wet I swapped it out with a different one but it still would not even power on the mouse or keyboard. if I need a new motherboard, can anyone link one that could replace the one this comes with? https://www.amazon.com/gp/product/B01MQX5692/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1