Diagnostic for laptop problems

[Guest Pidgx]

I have a 5 years old 1st gen Lenovo Yoga with Windows 8 64-bit.

 

These last days, I started experiencing problems such as:

 

- Keyboard and power button did not allow to get the computer out of sleep

- Laptop shuts off randomly and/or right after unplugging power cable

- Keyboard, trackpad, power button and closing the laptop become inactive and I have to force stop

- Sometimes, the keyboard becomes inactive and 2 seconds later, the computer turns itself off, but not always

- Surprisingly enough, if I use a wireless USB keyboard, I don't encounter the problem, but if I start using the laptop keyboard, the problem of inactive keyboard/trackpad/power button comes after a minute or so

- Wireless external mouse remains active when keyboard/trackpad/power button become inactive

 

To be noted as well:

- Windows 8 was never reinstalled in 5 years, but I'm generally very careful with what I install

- Laptop did not experience a shock or humidity recently

- A Windows update was announced a couple of days before these problems started and the computer started having these problems before I restarted to let the update be installed

- I visited some torrent website and had a couple of warnings from my anti-virus, I just left it scan itself

- I was in Iran recently, which is notorious for viruses

- The battery has a good autonomy

 

What I already tried:

- Check if keyboard and trackpad are allowed to get computer out of sleep in Device manager

- Reset "Balanced" plan in Power options

- Thoroughly clean fan area and keyboard with an air compressor

- Run full anti-virus system scan

- Tried Windows repair tool

 

Does that ring a bell?

 

Thanks

 

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