[Help] F4-223 won't turn on

[user51138]

I connected an HDMI monitor to my F4-223 and fiddled with the BIOS settings. I do not have exact recollection of what settings I changed, but having over 20 years of experience with computers, I highly doubt that I would have changed anything critical and not something benign like boot order. Nevertheless, after turning the unit off and back on, it now: 1) doesn't show anything on the screen, 2) sits for like 3 seconds, and then 3) clicks its speaker and shuts off.

"OK, maybe I DID mess something up!" I thought, removed the CMOS backup battery and waited for a full day before reinstalling the battery and turning it on again -- that time should be enough for the CMOS to lose charge and BIOS settings to reset to default. Surprisingly, that did not help! The behavior did not change.

Also there's a button in the motherboard that I assumed may be CMOS reset -- but turning the box on with that button held doesn't solve the problem either.

Now I am out of ideas. I have never heard of "bricking the box by changing BIOS settings".

Any suggestions?

[TMzethar]

This possibility does not exist. It is probably just a coincidence. May I ask if you are using the original power adapter? Is the RAM also original? If you have not made any hardware changes, please contact the Service team to replace the device for you.

[Gremlin]

I have never heard of "bricking the box by changing BIOS settings".

I "bricked" my desktop only yesterday by changing one setting but it did come back with cmos reset. 'Got my T-shirt' back in the 70's but still had to think for a few seconds.