Buy an external drive, if you don't have one.
Back up FROM old drive TO external drive USING Easeus.
Boot to BIOS, find settings for disk controller ports on motherboard, and set them to AHCI mode. If you were to boot from the HDD at this point, it would fail, since that installation doesn't know how to boot into AHCI mode.
Attach the SSD. It might be a good idea to temporarily detach the HDD.
Then restore TO new SSD FROM external drive USING Easeus with "Restore to dissimilar hardware" checked. This won't work if your SSD is smaller than the amount of stuff you had on the old boot drive, because it won't fit!
Re-attach the HDD and use the BIOS menus to make sure that your machine is booting from the SSD.
Thanks for the offer, but it's all volunteer here, we don't get paid. And my travel from US to Denmark would be a pretty big item. If you are not comfortable opening a case and installing hardware, putting in the SSD may be the issue. The AHCI change is done from the keyboard.
Ask more questions if you need help using BIOS; most of the people on the forums know how and can help. Post the brand and model of your motherboard since different motherboards have different BIOS layouts.