sql server Fully uninstalling SQL server 2014

[Shammikit]

so idk how it happened but i think i have installed sql server 2014 twice in my system and i have 2 instances. so i uninstalled the instance that i created and it was the only instance which showed up in the wizard to uninstall it. however after uninstalling that i searched for sql server in my pc and it wasnt there.since there were 2 instances i should still be able to access sql server even after uninstalling one instance right? because i was unable to find it i thought everything got uninstalled so i installed sql server again and when i open it up i still have 2 instances in it! and this time when i try to login to one instance it gave me this Named Pipes Provider, error 40 - Could not open a connection to' SQL Server' error. i found the solution for this online and it was to activate the sql server service which was stopped from services.msc or sql server 2014 configuration manager but it gave me a error saying "the request failed or the service did not respond in a timely fashion". so i have decided to uninstall sql server once again and when i tried to uninstall sql server 2014 64bit from add or remove programs it asked me to uninstall some other sevices first so i uninstalled all sql server 2014 services that showed up in add or remove programs and when i try to uninstall sql server 2014 64 bit it gave me this error shown in the screenshot. what is going on? How do i fully uninstall sql server 2014 from my PC and so that i can start off with a fresh install?  Any help would be greatly appreciated as i have wasted 2 days trying to get this thing running. Thanks.