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It sounds like your user profile may be corrupted. You could try CTRL+ALT+DEL and open task manager from the security prompt if it opens. In task manager click File -> Run New Task. Type Explorer.exe into the dialog box and hit OK, the desktop should launch. If that doesn't work then I would try to get into safe mode from the log in screen: (1) "Get to safe mode from the Windows sign-in screen: (2) On the Windows sign-in screen, press and hold the Shift key while you select Power Circle with line Power icon > Restart. (3) After your PC restarts to the Choose an option screen, select Troubleshoot > Advanced options > Startup Settings > Restart. (4) After your PC restarts again, select the startup setting you want to use. * (1) When you're done, exit safe mode by restarting your PC. If that doesn't work: (2) Press the Windows logo key Windows logo Start button + R. (3) Type msconfig in the Open box and then select OK. (4) Select the Boot tab. (5) Under Book options, clear the Safe boot checkbox."

Hi there, check that the refrigerator is level on the ground, also check that the door is closing fully and that there are no open gaps between the frame and the gasket. The other thing I would suggest to check is there are no breaks in the gasket, this is the plastic attached to the door and creates a seal when the door is closed. If it is damaged it will need to be replaced which is usually quite a simple undertaking.

The motherboard may be in a protected state, similar to if your laptop falls. You could try removing a stick of ram and try to power it on. If that doesn't work, try removing the bios battery for 1minute, connect it again and try to power the system on. You have probably tried this but it could also be the fuse is blown in the plug for the pc, you could try another cable and also try powering it on directly into the wall and not through the surge protector.

In recovery mode you use the volume and power buttons to navigate to the option you want to select. Recovery mode is basically the same as safe mode in Windows. Only the bare bones of the os is loaded hence why touch doesn't work.

Hi there, Is the display setting set to always on?

Hi there, You could open it up and reconnect the cable for the front panel to see if that helps, it's passivity that just the panel is faulty, if it has a remote, you could try to set it to cd and try to play a cd or radio and increase volume to see if you get any output?

You can replace your HDD with any type of 2.5“ SSD. The only differences is the type of memory the SSD uses and how many read/writes it can handle over it's life span.

Hi there, The power switch may be the issue, it could be the switch itself or cold solder joints on the power switch. If it has a sliding on/off switch the little arm on the switch could be broken meaning the part you slide has nothing to catch on to to move the physical switch to the on position.

Hi there, Do the fans work just not the leds on them? If so, it may be simply be that the leds are faulty or not properly connected. For the no signal issue, remove the gfx card plug the video cable into the on board graphics port and see if you get display. If you get a picture then shut down again and reinstall the card, install the power connectors to the card. If you have a multi meter you can measure the voltage on the 12v connectors, one of the rails may be faulty. If it still does not work then it is likely the motherboard is faulty and cannot distribute the power that is required.

Thanks for the voltage readings however it is likely the psu, voltages will look normal when idle but drop when the psu is under load (power up). Have you checked visually the psu? Caps bulging etc.