freeze at startup

When I boot up my PC, the PC freezes abruptly and the HDD light on the PC tower is solid red. Even if I try to boot into Windows Installer USB, the PC freezes sometimes at "starting windows", or sometimes when it does go into the installer, it freezes randomly. It doesn't even respond to mouse...

Pls Help I was playing Roblox and suddenly my screen froze. I switched it on then off but it still continued after I loaded up Roblox. Then the more is switch it on and off in a row the faster it freezes after logging in. After it freezes it goes blank or shows random colours even the monitor...

hello, i want to ask a question about my laptop..first, sorry for my bad english...my laptop os is windows 10, so recently, when i try to shut on my laptop, it freeze on the win 10 startup logo, the dot sometimes freeze or blank, and i keep on hard shut down it by pressing the power button...