topic Re: canon eos r100 wont turn on in EOS DSLR & Mirrorless Cameras

EOS R100 wont turn on

annanas104 — Tue, 17 Feb 2026 13:20:20 GMT

Hi, today I received my Canon EOS R100 (so it’s brand new). I used it for a few minutes right after opening it, and while I was sending photos to my phone through the camera app, it suddenly turned off.

Even though I charged the battery for hours and tried every button combination I found online, the camera won’t turn on.

The only sign of life I sometimes get is the small red light near the screen that briefly flashes when I reinsert the battery, but the screen stays completely black.

I’ve tried removing and reattaching the lens, taking out the SD card, and everything else, but nothing works.

Please give me some advice because I can’t return it or get a refund.

Re: canon eos r100 wont turn on

deebatman316 — Sat, 14 Feb 2026 19:10:00 GMT

@annanas104 why can't you return it? If you got it from a Canon Authorized Dealer they will accept returns, exchanges and refunds. How long did you charge the battery for before using it.

Re: canon eos r100 wont turn on

annanas104 — Sat, 14 Feb 2026 19:14:37 GMT

2 hours charging is enough?

Re: canon eos r100 wont turn on

annanas104 — Sat, 14 Feb 2026 19:15:03 GMT

because the charges says that is full charged by the green light

Re: canon eos r100 wont turn on

deebatman316 — Sat, 14 Feb 2026 19:17:54 GMT

Will the camera work with the SD Card removed? What kind of SD Card are you using? Is it a full sized SD Card or a Micro SD Card in an adapter? Avoid Micro SD Cards in an adapter those cause all sorts of problems. Your camera wasn't designed for those.

Re: canon eos r100 wont turn on

annanas104 — Sat, 14 Feb 2026 19:20:55 GMT

Thank you for your answer.

The camera doesn't turn on either with the sd on or without, its a compact one SP SDXC 64GB.

but i dont know why sometimes turns on the small red litght and sometimes no.

Re: canon eos r100 wont turn on

deebatman316 — Sat, 14 Feb 2026 19:38:43 GMT

@annanas104 do you have another battery to test out in the camera?

Re: canon eos r100 wont turn on

annanas104 — Sat, 14 Feb 2026 19:56:09 GMT

unfortunately no, but this battery is brand new, original, and the charger says that is fully charged...

Re: canon eos r100 wont turn on

stevet1 — Sat, 14 Feb 2026 19:57:50 GMT

annanas104,

Does your camera have a Disp button? If it does, try hitting that a couple of times. If you get a quick little red light, your screen might be black, but your camera might be on.

If you hit the shutter button, does your camera make a sound like it's taking a picture?

Steve Thomas

Re: canon eos r100 wont turn on

annanas104 — Sat, 14 Feb 2026 20:25:38 GMT

no, it doesnt have the disp button 😞

Re: canon eos r100 wont turn on

FloridaDrafter — Sat, 14 Feb 2026 20:50:52 GMT

Does the Electronic Viewfinder (EVF) Work? Something may have disabled the rear LCD. If that is the case, you will need to navigate the menus using the EVF and reactivate the rear LCD.

The button Steve is referring to isn't "DISP" on your camera, it is "INFO". So you may be able to toggle it to get your rear LCD to show up.

If the above fails, you can try a "Hard Reset". To do this, remove the battery, CF card, and lens, then press the shutter button for at least 30 seconds or longer. Put it all back in place with a fully charged battery and power up.

Please report back.

Newton

Re: canon eos r100 wont turn on

BurnUnit — Mon, 16 Feb 2026 03:18:31 GMT

Did the camera include a Canon warranty card? Why won't the seller/dealer accept the camera for return or exchange? Did you possibly buy a "gray market" camera?

Try the suggestions listed above. Some of them may get things working properly again. Meanwhile, if you used a credit card to make this purchase check with the card issuer and see they will stop payment for you. Better to find this out sooner than later. And best of luck getting this resolved.

Re: canon eos r100 wont turn on

LeeP — Tue, 17 Feb 2026 15:58:33 GMT

Indeed ALWAYS buy from a reputable dealer.

Re: canon eos r100 wont turn on

LeeP — Tue, 17 Feb 2026 19:30:58 GMT

As soon as I saw "can't return it" my heart sank because (1) no one deserves their joy being ruined by a defective camera and (2) the R100 is a really wonderful, go-everywhere "friend" that because of its size can hide in a backpack or in the center console of your car (weather permitting) ready to shoot pictures. I noted the great suggestions here. My experience with the R100 has been flawless and mine usually has the 28mm RF "pancake" lens on it which has allowed me to take advantage of moments on the fly.

Re: canon eos r100 wont turn on

LeeP — Tue, 17 Feb 2026 19:32:29 GMT

Does it have a Canon USA warranty card?