Does the screen freeze for more than 30 seconds during boot? If so, tell what you are seeing.
It could be many things. For instance, they could have left the bios setting on which scans all of memory. (This is probably a good thing to leave.) If they left the memory scan on, then the BIOS usually tells you that it is scanning memory.
They could have also altered the order of device searching during the boot where your hard disk might be low on the list.
There could also be a lot of things added to your startup. A lot of new computers, or newly loaded computers, get a bunch of garbage loaded at startup in order to send you pop-ups describing the stuff they want you to buy. Do you notice more items in the task tray on the far right lower corner?
It slowly gets to a blank blue screen (not the infamous blue screen of death but the one that matches the Vista opening screen with my user icon).
I just tried deleting programs, and I went to msconfig.exe and turned off some unnecessary programs didn’t work. I’m going to look for whether it is doing a quick bootup in the BIOS or not.
“they could have left the bios setting on which scans all of memory. “
You are way too old.