When printing a document (File, Print, Printer properties, Paper/Quality), only Draft, Normal and Best are offered. There is no option to select colour and the printer prints in greyscale (there is a difference in tone between black and colour text).
As part of the solution to a previous problem, the Envy 5540 series Basic Device Software was downloaded successfully.
If you start from here you can eventually get to a phone number for HP UK Support:
https://support.hp.com/gb-en/contact/printers
(I can't give it to you directly because I've not got an HP printer).
Or if you use the 'HP Diagnostic Solutions' link from that page you can use online chat to a virtual assistant.
I'd try uninstalling and reinstalling the printer first though (remembering to RESTART the computer before reinstalling - that's important!).
I've already been to Support but the Virtual Assistant is a robot and is no use. To chat to a human you have to pay. I followed your last suggestion but no joy - colour is still not an option.
Look through the options. You'll either need to enable an option labelled 'Print Color' (which I believe is the way that HP usually does it) or disable one that says 'Grayscale printing' (which is what my Canon uses).
If there's an 'Apply' option available, click on it and then on OK. (Otherwise just click on OK).
Thanks, Buenchico. What are these numbers?
I'm lost, too. It must be a software (driver) problem. I have downloaded the driver several times but to no avail. The missing colour option also affects the other PC on the network. Googling words to the effect "My HP printer has no colour option" produces several results which suggests that this is a known problem. The replies from Customer Service are sometimes useless. I have seen:
CUSTOMER: I want to print in colour but there is no colour option.
TECHNICIAN: Go to Printer properties and select colour.
CUSTOMER: Der!!
The printer prints just fine in colour if I scan a document so the problem is not there.
I'm sorry if this sounds too obvious but on my PC I click on 'Properties ' and then get headings (including 'Advanced' as mentioned) and further along there's 'Color' to click on and it gives me the choice of color or greyscale.
Other than calling the phone number I've given you, all I can thik of that I'd do in your situation would be to
(a) uninstall the driver ;
(b) restart the computer ;
(c) download & run CCleaner to get rid of any incorrect registry entries ( https://www.ccleaner.com ) ;
(d) restart the computer in Safe Mode ( https://support.microsoft.com/en-gb/help/12376/windows-10-start-your-pc-in-safe-mode ) ;
(e) install the driver in Safe Mode ;
(f) restart Windows normally ;
(g) cross fingers
Got there in the end!! I'm not sure exactly how but basically, I did parts of the above suggestions including some from the HP Support Community (like the curate's egg - good in parts). We can now print in colour from both PCs on the network. Running the Microsoft Troubleshoot and downloading the driver seemed to clinch it.