Kronos won-t boot - says remove USB device which is not pres

keybrdguy14 · Post by **keybrdguy14** » Sat Feb 28, 2015 9:32 pm

My Kronos was working great a few days ago. Today I boot up and it fails saying remove the USB device, which is not plugged into the keyboard. Removed bottom of keyboard and checked to make sure all connections tight. Tried booting with USB in and then removed and re-tried - same result. Help please????!?!

GregC · Post by **GregC** » Sat Feb 28, 2015 9:36 pm

what exactly where you doing before or during the first boot up failure ?

Did you move the Kronos ? Did it lock up when you were playing ?

and having a few more facts might be a good idea. Like what yr is your Kronos, the model, and what USB device was plugged into it

SanderXpander · Post by **SanderXpander** » Sat Feb 28, 2015 10:26 pm

When this happened to me, it was loose RAM.

keybrdguy14 · Post by **keybrdguy14** » Sun Mar 01, 2015 6:43 pm

I brought it home and set it back up - had been turned off 4 days. No USB was plugged into it and I seldom plug a USB into it. I just turned it on and when the red line gets to the middle of the S (from Kronos logo above) it stops and then it says boot failure - please remove USB .... My Kronos is 3 years old - one of the early ones - #333. It has seldom locked up during playing and has never done this before. Overall, it's been very durable. Hate to take it for service - closest is 60 miles away.

keez · Post by **keez** » Sun Mar 01, 2015 9:54 pm

I have also had this error many times when another midi device was connected via midi cables

Every time it happen, I just switched off the other midi device, or unplugged the midi cable, and tried again. Always worked then.

SanderXpander · Post by **SanderXpander** » Sun Mar 01, 2015 10:14 pm

keybrdguy14 wrote:I brought it home and set it back up - had been turned off 4 days. No USB was plugged into it and I seldom plug a USB into it. I just turned it on and when the red line gets to the middle of the S (from Kronos logo above) it stops and then it says boot failure - please remove USB .... My Kronos is 3 years old - one of the early ones - #333. It has seldom locked up during playing and has never done this before. Overall, it's been very durable. Hate to take it for service - closest is 60 miles away.

Exact same symptoms I had, for me it was loose RAM. If you're out of warranty I would definitely open it up myself to check for loose RAM. If you have a 73 or 88 check a tutorial, the keybed can be a bit finicky to secure back into place properly.
If you're not comfortable with this sort of thing, warranty repair is the safest option. Doesn't seem like a software issue to me.

keybrdguy14 · Post by **keybrdguy14** » Sun Mar 01, 2015 10:40 pm

I went in and removed RAM and put back in. I tried connecting and disconnecting USB stuff thinking maybe that would trigger a change. Tried booting with USB connected and after getting message removed and repeated....still stops in the same place every time. Weird! Any other suggestions you guys might have are welcome - otherwise it goes to the shop tomorrow.

kronoSphere · Post by **kronoSphere** » Sun Mar 01, 2015 10:44 pm

The same kind of problem occured to my kronos some months ago and I shall never regret to have brought it to a Korg repair center. Weeks passed away... My kronos was out of warranty, still I have paid nothing. The Korg staff had to format the internal hard disk and reinstall all. Maybe I could do this myself but honestly I am not sure. Many thanks again to all the Korg staff again

The Do It Yourself is one thing The Korg repair Center another.

keybrdguy14 · Post by **keybrdguy14** » Sun Mar 01, 2015 10:46 pm

I plugged a flash drive in USB A and booted again. It booted all the way - no problem. is working fine. It shouldn't have booted with the USB in the slot but it did. Now I don't exactly have a real good comfort level that it won't do this again....... this makes no sense!

GregC · Post by **GregC** » Mon Mar 02, 2015 12:06 am

keybrdguy14 wrote:I plugged a flash drive in USB A and booted again. It booted all the way - no problem. is working fine. It shouldn't have booted with the USB in the slot but it did. Now I don't exactly have a real good comfort level that it won't do this again....... this makes no sense!

the remove USB device seems to be a default msg no matter what happened.

my guess is that your Kronos closed , or powered down 'incorrectly '. For example, the sequencer was running, u stepped on sustain, or u nudged the vector stick during shut down, or u had your fingers on the keys in combi mode during shut town.

I am saying this theoretically, since I think the Kronos is touchy during power down. thus if something went ' bump' during shut down, the next startup/load OS could reflect this.

keybrdguy14 · Post by **keybrdguy14** » Mon Mar 02, 2015 1:30 am

I get what you're saying. Just the strangest thing - it says remove USB when USB not there but boots fine with USB - backwards from normal but I'll take it if I don't have to take it for service! Thanks for your help!

Stratario · Post by **Stratario** » Mon Mar 02, 2015 3:00 am

Does the Kronos motherboard have a battery on it? Does the battery have to be replaced every once in a while? If that is the case I would replace the battery and reinstall the BIOS.

Fred

GregC · Post by **GregC** » Mon Mar 02, 2015 3:47 am

Stratario wrote:Does the Kronos motherboard have a battery on it? Does the battery have to be replaced every once in a while? If that is the case I would replace the battery and reinstall the BIOS.

Fred

There is a CMOS type battery that gives out a battery low warning. Seems to be overkill to replace it just in case.

What step by step directions do u have for reinstalling the BIOS ? And are u 100% sure that is something required ?

McHale · Post by **McHale** » Mon Mar 02, 2015 3:49 am

Stratario wrote:Does the Kronos motherboard have a battery on it? Does the battery have to be replaced every once in a while? If that is the case I would replace the battery and reinstall the BIOS.

Fred

Totally unrelated. All the battery does is keep the time and date for the OS. It should also last about 10 years.

-Mc

Davd C. Polich · Post by **Davd C. Polich** » Mon Mar 02, 2015 6:32 am

You know if you pull a USB device out of your computer right after you
initiate shutdown, you'll likely get a message next time you boot up saying a device was improperly removed. Or, it will look like something is in the trash until you plug the USB device back in.

This sounds like these ams kind of thing - for some reason, your Kronos
was seeking a "phantom" USB device that it "could have sworn" was plugged in when it was powered down.

Korg Forums

Kronos won-t boot - says remove USB device which is not pres

Kronos won-t boot - says remove USB device which is not pres

Had just used 4 days before at a concert.

Re: Had just used 4 days before at a concert.

I checked connections

Something that shouldn't have worked WORKS!

Re: Something that shouldn't have worked WORKS!

I get it