my dell dimension c521 desk top does not give me (picture) anything on my monitor. I know for sure my monitor is ok. Plus the power button does not turn off I have to unplug it from the outlet. I have been told I needed a video card but not the problem with the power button I'm not so sure. Any ideas? Thanks, Raylene
Your power button has a light on it - blinking amber means there a problem with the pc or attached/installed device, solid amber means its a power supply issue
what are the 1234 light doing? They should flash on & off while booting up.
1 green = no ram detected
2 - expansion card issue (could be gpu)
3 - possible cpu failure
4 - computer is in recovery mode.
1&3 - memory config error or conflict
23 - drive failure
234 - usb or usb device failure
24 - graphics failure
34 - memory problems again
Hi. My Dell Dimension C521 while booting up 2&3 green light keeps flashing on & off. I saw your post and you said it could be a drive failure. I was wondering if you were referring to the hard drive, floppy or DVD drive because recently changed my DVD drive and the problem still persists. Can you please help me?