I traded CPU, PSU and Graphics Card with a friend. When I took his parts and build my PC everything works fine. When We tried to put my parts in his PC, the Mainboard did a non-ending 2 tone siren alarm (long - short). We did many things to see whats wrong, and we thought the MB is dead.
Now, half a year later, my MB is dead. I forgot about what we thought about his MB a few months ago, so I tried to pull back all his parts in the "original" PC. Everything works. For me it's obvious that my MB is dead. But his MB is now behaving weird.
When I start the PC MB beeps once short, and works fine. When I restart the PC in Windows 7 or Windows 8.1 the PC restarts and beeps long-short once on startup. Its the same sound like in the past, when nothing worked, but only once.
Short clip on Youtube: https://www.youtube.com/watch?v=ujvJUScexVw
Mainboard: Abit IP35V
CPU: Intel Core 2 Quad Q9450
RAM: 4x2GB Kingston Hyper X DDR2 8500-CL5 1066MHz
PSU: BeQuiet 550W
Graphics Card: nVidia GeForce GTX 285 AMP OC
I did BIOS Update successfully and I cleared CMOS a few times. Still same problem. I'm wondering because the PC looks like it is running fine. But why the long-short beep on restart?
Is it possible that just the beep-code part on a MB is corrupt? Anyway, I hope some of you got some ideas to help me out. I don't got the finances to get a new PC, I could only ask my friend to get his Abit Board and then I have to hope it will stay alive one more year. Other MB on same level costs 80€ (new). I don't want to investigate that much.