PC hardware--CPU & Motherboard & RAM/pc shuts off by itself

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Question
hi, my desktop started shutting off a couple weeks ago. it gradually got worse and now it wont even come on at all. a friend of mine thinks its the motherboard battery , i think it might be the power supply. i dont know how to tell .help please.

Answer
Well, you can replace the mainboard battery for about a dollar (or less), so that would be the first thing to test, if you're considering that as a problem. If the problem persists, I would suggest a replacement power supply from a reputable vendor, something like an Antec, Enermax, or Corsair unit purchased from somewhere like Newegg would be my pick. If the system is more than ~5 years old, I would honestly consider a replacement though (as the new power supply will be worth more than the entire computer).

-bob

PC hardware--CPU & Motherboard & RAM

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Bobbert

Expertise

I have nearly two decades of experience in IT, computer repair, and related fields and will attempt to provide the most solid, brand-agnostic advice when it comes time to purchase a new computer, or upgrade an existing machine. I can answer anything from the seemingly basic to the downright complicated - and will do my best to provide this information in a clear and concise manner.

Experience

I have been an enthusiast of PC's for many years, and can answer questions about the purchase/use of a new computer or the purchase, installation, and use of upgrades for existing computers. There probably isn't a whole lot related to the home computer that I haven't seen over the years.

Education/Credentials
15+ years of experience

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