Windows 10: Sometimes PC won't display anything when I turn it on

Hey,

This happened 4 or 5 times. Sometimes when I turn on my PC it doesn't show anything on the monitor, I've waited a few minutes but nothing comes up. I must turn it off using the button on the case, because there's no other way, and then on again to fix it. I'm afraid that someday it won't boot at all. What could be causing this? Could it get to the point of not booting at all someday? Anyway way of fixing it? Also, I started like a few months ago to clean my registry and defrag my drives almost every day using cleaning utilities such as WIse Care 365 and Glary Utilities, and sometimes with the Windows one. Could that be what's causing it?

:)

 

Nokia Belle FP1 Pros and Bugs.

When we connect the headphones, the display backlight just turns on but not completely and stays on always!

Also as I mentioned previously, sometimes the display won't turn off at all after locking, we need to restart to solve it but the problem returns back.

 

Problems with the Camera on Windows 10

Sometimes when I turn my tablet on (Dell Venue 10 Pro) And use the camera app, it is totally black and won't work...

The camera light is on, but it doesn't show anything. When I try to take a photo anyway, it freezes and won't shut down for a long time. This also happens If I change cameras. Is there anything I can do??? (Besides look for an update that isn't there, I've
checked before.)

 

Could be bunch of things, anything from bad PSU or capacitors on the motherboard. No software can do that if it won't show BIOS screen or get past it.

 

Well, then what? I should continue using it and just hope it won't get any worser?

 

Well, I would take it apart, clean everything, check it all carefully and maybe try another PSU first.