computer hdd issue

I have an old laptop with an hdd with Windows 10 installed. Then I gave it to an aftermarket to install an ssd. and now I have both the ssd and the hdd installed. They installed the ssd with windows 10 and the old copy of the os still in the hdd, but removed from the boot record. I then...

Monitor: Samsung C27F398, 1920 x 1080 resolution Video Card: ZOTAC NVIDIA GeForce GTX 750 Monitor has HDMI and DP input connections only Video card has mini-HDMI, DVI-I (Dual Link), DVI-D (Dual Link) outputs only We use the computer and monitor for gaming. We use separate speakers for sound...