Have a Micro Pro computer (couldn't find any model number indications). There is a sticker that says it's a Millenium computer though... so it's from 2000. When turned on there's no picture on the screen and 1 long beep followed by 3 short beeps. One of the fans in the computer wasn't working and I told the person that they shouldn't use the computer... and my friend who's also CompTIA A+ certified like me told her that the computer has fail safes and that she wouldn't fry anything on the computer and that it would just shut off to prevent overheating. Well, I believe she's either fried her motherboard or her cpu. I can't seem to find beep codes anywhere online to figure out which one the issue is though.