HP bios update black screen

[CarolA22]

HELP. After doing an HP bios update I appear to have a dead computer. The screen is black. The power light is on but i can't get it to boot. I have tried switching on with windows key + b. I have tried f2. 

Whar else can I try please?

[BeemerBiker]

---

@CarolA22 wrote:

HELP. After doing an HP bios update I appear to have a dead computer. The screen is black. The power light is on but i can't get it to boot. I have tried switching on with windows key + b. I have tried f2. 

Whar else can I try please?

---

This is not good.  I assume you have tried tapping the ESC key when powering up and diagnostics does not run.

Your maintenance  document is here and the bottom of page 98 mentions a crisis recover tool.   That tool can be downloaded on this page

 https://support.hp.com/us-en/help/hp-pc-hardware-diagnostics

Expand the "Diagnose other potential issues" to get to the 4-in-one tool download.  Note that the tool is for IT professionals or service partners.  You can try the recovery but I recommend you contact HP support and get their advice

1) Click on this link -
https://support.hp.com/us-en/contact-hp
2) Select your product type below.
3) Enter the serial of your device.
4) Select the country from the drop-down.
5) Select the chat or get phone number options based on your preferences.
6) Fill the web form and proceed further.

[CarolA22]

Yes, tried tapping ESC.

HP said they will not help and I cannot download anything as the computer is dead - I am using my phone to post this

[BeemerBiker]

There are not many options available.  If you take it to a tech shop they will charge just to examine it.  The cost to examine may exceed the price of a used 15-bs series laptop.

You can buy an inexpensive laptop, get a USB adapter and copy the documents from the old disk drive to the new lapop.

You can buy a used 15-bs series laptop and put your disk drive in it.  Make sure the seller guarantees the laptop works and does NOT ask for a bios password when turned on.

It is also possible, although difficult,  to replace the motherboard.  The link above shows motherboards as low as $32USD.  However the warning about the bios password applies.

The motherboard  I am currently using has a small switch that can flip the BIOS to the original BIOS should an upgrade go bad.  Unfortunately, only the more expensive systems have that feature.