toshib sattellite

Hello everyone, My laptop model is toshiba satellite c660 and I use it without battery. Both of shift buttons of my laptop weren’t working. I cleaned the keyboard and narrow lines that are full of dirt of my laptop with toothpick and toothbrush. However, when I plug the cable in and press the...

I have a Toshiba Satellite C50-A-1DV which I've had from new, for a few years now. It has been getting a bit slow but few days ago it just freezes beyond the home screen if I try to open a folder or program (occasionally it freezes on boot up).

It's been a few months since my laptop Toshiba satellite L755 (i know quite old) restarts really randomly, when I'm on YT, simple search, just logged in my account or even the windows logo showing, i thought it's ram but no ram is fine since i ran memtest for 24hrs with no heating issues too...