Windows 10: After installation of Windows 10 without a disk nothing works on my HP laptop. I had...

My cousin that is in his second year in university and studying to become a computer engineer installed windows 10 on my HP laptop without a disk. My laptop was on windows 8 previously. Since he installed windows 10 nothing works on my laptop. It's extremely slow, my windows key doesn't work, Google chrome doesn't work, I have two email accounts on my laptop. One for my brother and one for myself. Not one of the two email addresses are working. Everything seems to be wrong. Big please help urgently what should I do?

:)

 

Installing W10 on this Laptop

HP Stream 11 under Windows 10 - Touchpad not recognized.

Are you making sure you are trying the correct driver for the WiFi... They list Broadcom, Intel, and/or Realtek.

Also, try to run the installer as an administrator install.

If that fails... try extracting the files and manually install the driver.

 

Installing W10 on this Laptop

Wifi works but where's the link he mentions in the link above? not seeing it

 

100% Disk with Newer HP Laptop and Windows 10

I have a relatively new HP laptop running Windows 10 that is showing 100% disk usage in Task Manager. I have tried all the commonly suggested fixes including:

• Restoring the system to factory settings and scrubbing the drives. (To ensure I didn't have a virus, malware, or corrupt driver)
• Installing all Windows updates
• Disabling windows search & smartfetch (Changed smartfetch in the registry to 0 so that it never runs)
• Disabling automatic windows updates
• Uninstalling One Drive
• Changing the size of data that can be cached to the hard disk based on the RAM
• Running diagnotics on the hardware
• Delaying start of all possible apps that don't need to run at start up

Is there some update / patch for Windows 10 that I can apply? Are there any other suggestions that someone can offer?