Home Forums Tech Helproom PC randomly loses power when the light switch is t Tech Helproom | Windows Help | Apple Help | Digital Home & Smartphones Help | Consumer Rights Advice | Games | Speakers Corner | Beta Testing Forum Rules | Contact Forum Editor | Report a Post PC randomly loses power when the light switch is t Steamed Bun 12:18 14 Jul 2018 Locked Hi guys, I recently bought a new PC from amazon (click here and it seems to have a power problem. What happens: The PC loses power for a split second - turns off and then immediately turns back on again. When it happens: When I turn the light switch on, when I turn the microwave on, when I turn the charger for the hoover on, it has a chance to happen. This did not happen with my old PC (same house). The strange thing is that the PC is connected to a UPS (which works fine, if I switch of the power supply to the UPS, the battery keeps the PC on). So what should I do, replace the PSU? I guess I wont be buying something valuable like a gaming PC from some random manufacturer via Amazon again, heheh... wee eddie 13:24 14 Jul 2018 I would get an Electrician in. Nothing to do with the PC. It sounds as though your House has an Wiring/Earth Issue. This could be dangerous Fruit Bat /\0/\ 14:15 14 Jul 2018 Sounds like you are getting voltage spikes which a UPS will not protect against. The new PC is probably more susceptible to the spikes. I would get your house wiring checked out, an electrician will pug in a couple of meters to your wiring to tell if circuits are complete and sockets wired correctly. Steamed Bun 15:28 14 Jul 2018 Thanks a lot Eddie, Warlord and Fruit Bat! I'm moving to a new apartment in a month or so, so there should be any problems there if the issue is with the wiring of this flat. I've only used the UPS (for PC + Monitor) on this socket, so not sure if anything else plays up if plugged here. I could tell my Estate Agents what's going on, but at the rate they do things... Guess I'll just have to be a bit more careful about when I switch stuff on and off, for these few weeks. Cheers, and enjoy the rest of your weekend! This thread is now locked and can not be replied to.