Why is the screen glitched?

A fuzzy, glitchy screen on startup is usually caused by a hardware or connection issue. Common causes include a loose or damaged display cable (especially in laptops), a failing graphics card, outdated or corrupted display drivers, or a dying screen panel. First, try connecting your device to an external monitor. If the external display looks normal, the issue is likely the screen or its cable. If the glitches appear on both displays, the GPU or drivers may be the problem. You can also try updating graphics drivers or booting into safe mode. Persistent glitches often indicate hardware failure requiring repair.