Note on archived topics.
05-23-2012 08:08 AM - edited 05-24-2012 08:56 AM
You can do a clean installation, and download the 64 bit version of W7 pro from the link below, and use your product key at the bottom of the notebook to activate the installation.
You will need to back up any info you want to retain and reinstall programs and files as you cannot directly upgrade from a 32 to a 64 bit OS.
You can find the programs and driver installation files that came with your PC in a folder on your C:\ drive, under SWSetup.
03-16-2014 11:56 AM
03-16-2014 12:12 PM - edited 03-16-2014 12:13 PM
Call HP for the country you live in at the link below, and see if they have a 64 bit recovery disk set for your 4720s.
Call the number listed for business PC's.
Have the model and serial number handy to give to the customer services rep.
If they have a 64 bit recovery disk kit, then you won't even need the product key--same for the 32 bit recovery disk.
In the USA, the cost for a set would be $10.00 delivered by first class mail.
06-29-2016 01:33 AM
I am wanting to do the same, but so I can then go to windows 10 64.
The download link provided does not appear to work any longet. Can you please update with new link, I am also having trouble with DVD reading, but it still burns. So will have to upde from USB
06-29-2016 06:40 AM
Microsoft shut off the links to the ISO downloads off in February of last year, which is why the link doesn't work anymore.
You now need a valid full retail W7 product key to get to the download links.