QUESTION: I recently moved my five-year-old HP PC into a different room, during which time the power was off for two hours. The machine now refuses to boot up. The only sign of life is a flashing power LED on the case. How can I fix this? Peter

HELPROOM ANSWER: It sounds as though the power supply unit (PSU) has developed a fault and may need to be replaced. Your PC is unlikely to still be under warranty, so you should look for a new PSU at an online retailer or local PC shop.

Visit HP's support page for more on power LED issues.

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