Ok, so recently I upgraded my PC with an SSD and installed Windows 10 on it from my old HDD. Soon afterwards I started getting these motor sounds that would stop if I restarted my PC. I checked for wiring catching on the fans, no luck. The HDDs themselves were OK too.
I never found out what the sound was but it stopped when I started getting an error on startup saying my CPU or RAM has changed. I have noticed that when I press F1 to enter setup and Del to go into the BIOS, the memory amount changes from the 8GB to 4GB (I have 2 x 4GB Corsair Vengance RAM sticks). I then restart, go back into the BIOS and it says 8GB again.Soon after that my onboard graphics (both DVI and HDMI ports) stopped working. The monitor definitely works on my GTX 1070. I've had a look in the Device Manager under the Display Adapters and the GTX 1070 is the ONLY adapter available. I've tried reinstalling the drivers but it doesn't do any good.
I have done memory diagnostic checks on restart 3 times and viewed the results in the Event Viewer and passed with flying colours.