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Released in 2012, the Toshiba Satellite C850 is a 15.6-inch notebook with a choice of either AMD or Intel processors. It has USB 3.0 and can be configured with up to a 1TB HDD for storage and discrete graphics.

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Why my laptop isn't turning on?

Hello guys.

I have this Toshiba Satellite C850 laptop. I believe this was bought back from 2012 or something. I have been using this for a long time, maybe years. It was in a perfect condition and worked so well too, except some problems with the in-built keyboard and quick battery draining issues. I solved this problem by using an external keyboard and plugged to power whenever I use this PC, so it wouldn't drain out battery.

So, last week. I encountered a problem with my laptop. I had this laptop in my brothers’ room. It had always been there for months. Then, I changed it to my room. Since there wasn't any charge left on my batter from the last session, I decided to plug it down. After charging for a hour or some, I tried turning this laptop on.

For C850, there are three light indicators. 1st one blinks orange light when the laptop is plugged with power (also blinks white light when the battery is fully charged.) 2nd one blinks once in 3 seconds when the laptop is turned on. 3rd one indicates when the hotspot is turned on, but I never used it.

So, my laptop is not turning on. Whenever I press the power button, the 2nd light blinker keeps the white light on and isn't turning the laptop on.

I did try pressing the power button for 30 or 60 seconds, removed the battery and plugged straight to the power and tried turning on. But none of that worked. In fact, I have almost done all the YouTube stuff on this topic, except checking the motherboard or the thing that has chips or little spike things or whatever.

I don't know what to do. I don't possess any advanced knowledge on the hardware side. If anyone had any similar problem or experienced and did solve it, please let me know. Or I'll have to do a repair check by someone.

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Try a power refresh and check if this resolves the problem.

a. Disconnect the charger from the laptop, if connected.

b. Remove the main battery from the laptop.

c. Open the laptop and remove the coin cell CMOS battery from the motherboard. (see image below). Remember the orientation of the battery for when you have to re-insert it, normally it is +ve on top. Here’s the ifixit Toshiba Satellite C850 - WiFi / Bluetooth half mini PCI express card Replacement guide. I realize that this is not the problem but the guide is useful as it shows how to open the laptop so that the CMOS battery can be removed from the motherboard. Gently lever it out with a small screwdriver - don’t slip! When you have removed the battery, check its’ voltage. If it is <2.6V DC replace it. Usually it is a CR2032 non-rechargeable Lithium coin cell battery that is available most everywhere. The battery type number will be printed on the battery. They have a life span of~5-6 years

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d. Press and hold the laptop’s Power button for 30 seconds and then release, to dissipate any residual charge in the motherboard. This action will reset the BIOS back to its’ default factory settings in case they were corrupted and preventing a normal start

e. Reinsert the CMOS battery (or replacement battery - see Step c. about orientation) and then reassemble the laptop.

f. When reassembled, reinsert the main battery and connect and switch on the charger.

Try to turn of the laptop. If it starts, there may be a message regarding the date and time is incorrect. This is normal as the BIOS has been reset. After the date/time has been corrected the message won’t show the next time that the laptop is started.

Check the charge status of the battery. If it is charging allow it to fully charge. If Win 10 is installed, create a Win10 battery report to check the status of the battery to see if it needs replacing etc.

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M Zakir sera éternellement reconnaissant.
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