If you need it, I'll attach this new sound in mp3 format (inside zip file)
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That would be a great help to me, thank you

I just turned it back on and unfortunately it doesn't make any more sound and turns off on its own.
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Hi SMDFlea and thank you again for your interest.
​It took me a while to unsolder and re-solder the chip... Now the computer started up for the first time with a beep as a signal, then turned off. Then it restarted and gave me a sound of 6 short beeps followed by two longer ones. Continuously until I turn off the machine at the button. Nothing appears on the screen. On the lenovo p720 manual, this beep sequence is not mentioned.

Thank you very much SMDFlea! I'll give it a try soon

Right! Thanks for the suggestion, I'm new to this forum, I hope I can attach a 32 Mb file. The serial number is: S4KP8150.
Thank you in advance to those who will be able to help me...

Hi, I have a problem with the bios of a lenovo Thinkstation p720 (model 30bb) with two xeon processors. During a bios update via windows routine there was a power failure and the computer has not booted since. I unsoldered the chip with the original bios and saved it to a file. I'm not bios expert and I don't know what can be done. I had hoped to find a compatible copy of bios on the Lenovo site but I saw that there was a They're just updates, not the whole original BIOS. The procedures suggested by the Lenovo site with emergency boot from cd or usb key and iso image, cmos battery removal etc...