Homebuilt ASUS A8N-E MB, 4 GB RAM, AMD Athlon x2 @ 2.4 GHz, Win 7

System was in standby two nights ago. In the morning, I couldn't get it to "start." I finally pressed the reset button and got 1 long and 3 short beeps from the BIOS. My research indicated that this was the video card - about 4 years old, so made sense. Replaced the video card and 1 long and 3 short beeps and no video! The computer otherwise seems to work ok - all of the fans spin, hard drives show activity (in fact, it seems to me that the system boots into Windows but I can't be sure because of no video), normal noises, etc.

So far, I've replaced the video card, pulled all of the RAM except one module (and swapped it for another one), replaced the CMOS battery and still get error beeps on STARTUP. I also tried a NEW PSU, and, interestingly, no beeps BUT also no video.

I don't know for sure but believe that a storm occurred during the night that the computer was in standby - but the system was plugged into an APC UPS.

All thoughts will be appreciated.Sounds like a power surge got the psu which got the video. Fans spinning & hard drive activity only indicates that some of the +12VDC is functional. Is it possible that the monitor was damaged, too?Quote from: Computer_Commando on June 17, 2010, 12:55:54 PM

Is it possible that the monitor was damaged, too?

...1. Additionally, the computer was plugged into an APC UPS.
2. In checking around, I've found quite a few ASUS MB 1 long 3 short beep issues without resolution.
3. When I get the parts for the new system, I'll try the new PSU and finally eliminate that possibility; but, I've tried two other PSU's without success.
4. ...I read that the Antec "continuous power" PSU's aren't compatible with APC UPS's - do you know anything about that?