Your PC may be set to prioritize booting from an external drive, which means that if you have another OS or recovery drive on a USB stick, and that stick is connected to your PC, your PC will attempt to boot from that. PCI-E Cards: It’s less likely – but still possible – that a disconnected GPU or other PCI-Express device may be the reason your Windows 10 desktop has failed to start.
Press the SATA cables in firmly and make sure it’s also connected to your PSU. Open your RAM bay (or PC tower), take the RAM out, and slot it back in to make sure it’s well connected. Modern laptops usually hold the RAM in a bay on the underside, which means you don’t have to open the entire thing to take a look.
Here are the main components you should be looking at. If you’re getting a completely blank screen when Windows tries to start, then – if you’re reasonably confident – it may be worth taking a look inside to make sure that all the hardware is slotted in as it should be.
