So, i've been having this issue for around 1 year and i cant fix it...I tryed everything like chkdsk, memtest...I replaced the disk with other but continues to hangs even in safe mode....So what could be the problem here?I've cleaned the cooler and i put thermal paste in the gpu and cpu but nothing fixed it and also i when i do CTRL + ALT + DEL the screen goes black and turns back for 5 mins. Please i need help its urgent.