[Q] A driver installed itself on my laptop through an .exe file
Hey guys, really need help here. Honest noob here so please try to understand my situation. I updated to Windows 8.1 to see what were the changes but unfortunately I realised I didn't have my activation key, so I decided to use a program called Windows 8.1 Key Finder Ultimate just to see all the features before buying the key ( I don't have money, I'm just a poor student)
So I installed it, and clicked on it. Then it prompted me to install again, which I found peculiar. So I scanned the exe and nothing was wrong. I installed the thing and tried to run it, but it did the same thing so I tried KMS activators instead. From KMSAuto Pro to KMSPico, nothing worked. Something I did along the way triggered a sound driver to install, and it definitely wasn't a Realtek driver, which is my soundcard manufacturer. I didn't really pay much attention as it was 2-3am, and I assumed it would just stop installing due to conflicts with the real driver.
Decided to sleep, went to school at 7, came back home and decided to turn on my laptop to listen to my new CD. No sound. I assumed its just WMP having issues with the CD, so I tried my other players. Nothing! Decided I should try to see the speaker settings and check vol. etc but I can't play any test tone, with the computer telling me "Failed to play test tone". I panicked for awhile but went on a solution hunt. I tried everything from a clean boot to driver update to uninstall then install, disabling audio and re-enabling, so many and nothing works. Five hours later I'm here desparate to find answers from the gurus. (I realised I have no restore points, which is really idiotic of me...)
I remembered the sound driver that installed itself, so I intended to find it and murder it. But being the noob I am, I don't know how to find the right thing in event logs and all the mumbo jumbo. Is there a way to see what changed recently, or installed recently (not only programs) or even what was running a certain periods of time (don't say task manager because I'm not looking for what's running but rather what RAN). Also, are there any ways to see all drivers installed apart from device manager and isolate them to diagnose the issue at hand?
Any solutions provided to me is greatly appreciated, and should be free is possible. I don't have any money on me and I can't find a job to support myself due to school, so please understand that this laptop is really valuable to me and I need all the help I can find here. If any other detail is needed I'd gladly provide them. And please don't condone me for my mistake and stuff, I'm still learning as I go along...
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Current Phone: Motorola Atrix 4G (Digitizer Damaged), Xperia Play, Optimus G Pro
Xperia Z1, Meizu MX3, Xiaomi Mi3, and the 1st Droid Bionic design, it was sexy!