Trouble installing SSD in Toshiba notebook. Any tips?

ruouttaurmind thought this was worth mentioning said
1

I’m attempting to upgrade the hard drive in my 3 year old Toshiba Satellite. I made a USB recovery backup, installed the SSD, went through the restore process. All seemed successful. But the computer keeps freezing. Either on startup, or within a few seconds after logging in.

I’ve checked the BIOS for an AHCI setting, but nothing even close in there. The only HDD related setting I can change is “Hard Drive Mode: Battery Saver or Performance”. Of course I’ve tried it both ways. Reinstalled the recovery both ways. Still no progress.

Thanks in advance for any tips which may lead me towards a solution.