I killed my computer SOS

My apologies for a wrong post, I have no idea where to post it. I had problems with in installing Google, I didn't launch at all, I wanted to uninstall it, I removed some files (I found somebody's suggestions to remove them
"HKEY_CURRENT_USER/Software/Google","HKEY_LOCAL_MACHINE/Software/Google","HKEY_LOCAL_MACHINE/Software/Wow6432Node/Google"). I restarted the laptop and I see now only some weird symbols, I can't even start my computer. I don't understand what happened and how to fix this problem. Please please please any help, I'm crying because I use my computer to work...