Question Lenovo 7303 7303ALB M58e won't post boot no video

[emophil]

Hello

I have had a Lenovo 7303 7303ALB and I also believe it is referred to as a M58e for over 10 years and its been working fine.

Now it wouldn't seem to post / boot. I don't see bios video pop up nor any other video for example the bios video.

Typically I would get a single beep that means that all systems are clear but I an no longer getting that.

I unplugged and re plugged all the cables and connectors and that didn't help.

I removed both memory sticks and I got a constant loud beep, put the memory back in and the constant beep went away. So it is recognizing the memory.

I can force the pc off by holding down the power button for 5 or so seconds, so something is working on that end.

So perhaps my video is just bad?

I removed the CR2032 cmos battery and measured it with a voltmeter, ir measured 2.96V, I put in a new one that measured 3.3V . No change.

What else should I check?

Thanks

 

[emophil]

update

I tried a ps/2 keyboard to see if that made a difference and still couldn't get into the bios and it still won't post or boot

I get nothing on the monitor, usually the bios info appears.

I also disconnected the dvd drive, hard drive and removed the wireless adapter card to see if that would make a difference and it didn't

not sure what is left to troubleshoot, perhaps the on board video failed..... I guess the power supply is ok...

I might remove the hard drive and toss the computer unless anyone has any ideas, I am happy to continue troubleshooting however ran out of ideas...