Lenovo clients intermittently failing to pick up OS

[speckytecky]

Annoyingly we are seeing an increasing number of our 64 bit Lenovo W7 Pro clients (and one HP client) failing to pick up the OS on a boot from cold. Pressing Ctr Alt Del from the resultant No OS found screen then goes on to result in a normal boot into Windows. With one Lenovo M92Z AIO client we have found Ctrl Alt Del doesn't reset it and the only way to get it to boot normally is to remove the power lead and after disk activity has stopped replug it, then it boots normally.

 

Would this be a case of somehow the boot setting for the client has changed in the BIOS - we haven't changed it and as I say the problem apart from the HP and the M92Z is intermittent.

[Oaktech]

Interesting... My m58s are doing that.

 

The only way I've found to fix it is to allow keyboardless operation (the keyboard and mouse are plugged into the hub in the monitor and if the kids turn off the monitor it definitely won't boot) I've also adjusted something in the bios which gives an OS timeout of 60 seconds, can't remember where it is exactly right now, but I'll have a look when I'm by them

 

Out of interest are you WOLing them?

[speckytecky]

Thanks @Oaktech

 

Yes they are WOL enabled; that is apart from one M92Z which so far refuses to! Additionally there's another M92z which for some unknown reason I often find in the morning with a black screen with single line of repeating text saying it couldm't find the OS. If I Ctr Alt Del nothing happens. If I hard restart the same screen comes up. If I do the Apple Mac thing and take the lead out from the back for 30 seconds and replug it starts normally!

 

n

Interesting... My m58s are doing that.

 

The only way I've found to fix it is to allow keyboardless operation (the keyboard and mouse are plugged into the hub in the monitor and if the kids turn off the monitor it definitely won't boot) I've also adjusted something in the bios which gives an OS timeout of 60 seconds, can't remember where it is exactly right now, but I'll have a look when I'm by them

 

Out of interest are you WOLing them?

[Oaktech]

That's exactly what I'm seeing.

 

I'm sure WOL has something to do with it, and I'm sure that OS timeout has something to do with it. The OS timeout is under 'advanced', 'ASF Features' 'OS Timeout' I increase the timeout to 60 and it seems to improve matters.

[speckytecky]

I've had a few interesting BIOS explorations recently. Seems BIOS updates quite frequently make some very unexpected changes! Had a few Dell 390s that the WOL wouldn't work on till I flashed the BIOS from 5 to 11!