Hp photosmart 635 power not on

HP PhotoSmart 635 Digital Camera

It sounds like a dew problem. Has it been left for a while without use?
Leave it turned on in a warm room for a few hours and it should start working again. Hope this helps.

You may download a copy of the manual here. If you really must have it on paper, an office-supply store or a printshop can print and bind it for you.

Hi.
If you are using the batteries that came with the camera or just regular or Lithium batteries, this could be your problem.
At Walmart or any discount store, buy 2 NiMH rechargeable batteries with the charger. Believe me, years ago when I bought my first digital camera, the same thing happened to me. I was only getting a few pictures and the batts went dead, especially if I was using the LCD screen and not the view finder, or using the zoom which both of them take alot of power.
NiMH batteries are made to last using when using digital hardware.
Hope this works for you!!!!

i still can't solve my problem with my camera.
the screen still displays a red color

Sorry to say; the camera is faulty and needs replacing.

I have a HP 635 which is the third one after the first two were faulty. The current one has had excessive battery use problems but I think it has been rectified by applying a solution from Fixya (Nspektor).

I would recommend returning it and getting a refund, or store credit at least, and buying a different brand of camera.

I hope this helps.

Same problem here, i upload the pics on my computer, then i turn off my cam, few minutes later try to turn it on, but no success, still have the blackscreen. I try to change the battery, reset it (15s without the battery, another 2 hours but no success), format the memory card (even without the memory the cam doesn't turn on).

This is a typical problem with these cameras. The culprit is a failed onboard battery. The battery is for retaining the time and date while replacing the removable batteries. If you put batteries in and set the time and date- then remove the batteries for about 30 seconds- put the batteries back in- if it asks you to set the time and date again the onboard battery is no good. If you remove the onboard battery your camera will be very usable and the batteries will last 100 times longer. If you can change the batteries quickly you will not have to set the time and date because there is a small capacitor that will retain a charge, in other words it works better without the battery. I have done this to about 15 of these cameras and all worked great afterwards. You will need a precision philips screwdriver to remove the 7 screws that hold the case together. The onboard battery is small, like a hearing aid battery, mounted on the lower board just behind a piece of brownish cellophane like material. Just cut the material open and look in there between the boards and you will see it. It is mounted flat grap it with some precision long nose pliers or tweezers, wiggle it until the solder joints fail and remove it. Re-assemble and your paperweight is a camera again. If you do it wrong ,which is unlikely, you still have a functioning paperweight.

The possible answer is that batteries are past thier best now and even a 'full' charge is not delivering enough power. treat your self to new batteries.