Hello Maria,
Yes it is perfectly possible to run Windows 10 and Qubes in a dual boot
environment.
I have spent several hours when I was researching how to put everything
together but mainly because I wanted to have the following setup:
- CoreBoot
- Dualboot with Windows 10 and Qubes
- Bitlocker Encryption (to be compliant to my corporate standards)
As I often spent some time to get everything working like I want it to
be, I keep notes and those might also be a good starting point for you:
https://github.com/one7two99/my-qubes/blob/master/docs/coreboot/howto-dualboot-qubes-win-coreboot-bitlocker.md
If you need further help, do not hesitate to contact, I can also
translate my notes to english, if it will help you.
Regarding a Laptop for Qubes I can and will always suggest the Lenovo
Thinkpad X230 with 16 GB RAM and a SSD. It is working perfect with
Qubes, can be Coreboot'ed and you can also plugin a LTE-card which will
also work great with Qubes.
- one7two99