Question about Coby kyros Tablets & eReaders
My tablet does not come on when charging , it just blinks coby , coby , coby , it doesnt come on and sometimes the screen just blinks black
Try using a paperclip to reset it on the back, hold it in for 5 seconds, if that doesnt work:
Turn the tablet all the way off, press and hold the VOL - and power at the same time for 8 to 9 seconds, it will show a green android guy with a system recovery menu. Use vol - to go down to Wipe Data/Factory Reset, press the power button to select it, go down to 'yes' to confirm, press the power button to select it, it will wipe the tablet, you then press the power button on 'reboot system'.
Posted on Jul 03, 2013
My tablet not turning on
Posted on Apr 30, 2014
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Posted on Jan 02, 2017
SOURCE: will not take charge
Sounds like your battery is knackered, only thing to do is replace it, you can check the battery with a voltage meter or take it back to the supplier and ask them to check it foryou.
Posted on Dec 14, 2011
SOURCE: toshiba M400 tablet wont start
I've had this problem intermittently on my Toshiba M400, and it recently became bad enough that it was failing to start on most attempts, and crashing soon afterwards if I moved it. Prodding the heatsink to change its position may have helped, but this could have been due to chance. It also had a habit of resetting itself when leaning on the left side of the keyboard when typing, but not when using an external keyboard. It's always had occasional crashes under high CPU load, causing the machine to freeze and the fan to go up to maximum. BIOS updates improved this initially, but in recent months it got worse again, especially when using Virtual PC unless hardware virtualisation was disabled.
I've just stripped down the laptop using the guide suggested by thiscomputer at http://www.irisvista.com/tech/laptops/Toshiba-Portege-M400/take-apart-tablet-pc-1.htm (good find!). Many parts are more fragile than in a desktop PC, but otherwise if you're used to taking stuff apart it shouldn't be that big a deal. You'll need a normal and small crosshead screwdriver (jeweller's screwdriver set works fine) and space to lay out the screws in a pattern so you remember where they go - consider making notes.
I fixed two things that could have been a problem: Firstly, a fair amount of dust was blown away with a hairdryer and vacuumed from the heatsink. Secondly, the pink thermal grease that couples the CPU to the copper heat pipe appeared to have all squeezed off the CPU die and had accumulated around the sides, possibly due to the small freedom of movement in the heatsink being repeatedly shaken. The grease was still soft so could be scooped back onto the die with a flat-bladed screwdriver. I also bent the legs of the Y-shaped CPU-to-heatsink retaining clip so that there was a greater downward force on the CPU. I figured this would improve thermal contact, especially if the clip had naturally bent and come loose over time. Removing the CPU itself didn't show any damage, but might have improved the electrical contact when reinserted. Be careful when screwing the Y-shaped retainer back in - because of the springy nature of the legs, if the screwdriver slips the screw will fly across the room and you'll have to hunt for it :-) The other thing to note when reassembling is that the wi-fi on-off switch engages with the lug on the motherboard, if this is wrong you won't be able to move the switch and the actual state will be the opposite of the switch position.
Finally, after I reassembled it still refused to start. I noticed the DVD drive wasn't properly flush with the case, and on removing the DVD drive it started. Close inspection of the drive and laptop connectors revealed a small metal tab had come loose, and the laptop continued to work with this tab removed and the drive reinserted properly. I removed and swapped some memory modules while experimenting with the DVD drive which also had some effect - it's possible that an ill-fitting DVD drive bends the memory above it and affects the contact. It's entirely possible that this was the only problem to begin with, and that playing with the CPU made no difference, so maybe check this first! But whatever it was, happily my m400 seems to be operational again.
Posted on Apr 11, 2009
SOURCE: laptop hp compaq tc 4400
Whenyou connect the power adapter into the laptop, does the power LED lightup? If not then - The battery adapter or the adapter's power lead or the laptop's powersocket could be faulty. Check power adapter's DCplug that connects into the laptop power socket with a multi-meter, the voltageshould be slightly higher than the voltage that is printed on the label on thebottom of the adapter. If the voltage is zero or way below the voltage that isprinted on the label then the power adapter is faulty and needs to be replaced. If the adapter is OK thenconnect it to the laptop and power it up, then look at the power/batterycharging LED light and wriggle the power plug in the laptop's powersocket. If the power/battery LED light flashes and in a certain position thisLED light stays firm, then the power socket is either faulty or it has a drysolder joint where it is connected to the motherboard. This can be repaired but itrequires the laptop to be completely dismantled to get at this power socket andrepair. If you cannot DIY then I suggest you get a quote first.
Posted on Apr 16, 2011
SOURCE: my tablet froze and now
Here you can try the following procedure to unfreeze your tablet:
First: Hard Reset
1. With the Samsung Galaxy Tab turned off, press and hold the VOLUME DOWN button, and then, briefly press the POWER button.
Second: Remove SIM card
1. Take out the SIM card and put it back in.
2. Then it will turn right on from the beginning if you press the power button.
3. If that doesn't work, it means it needs to charge.
Try one from the procedures below
1. Hold the POWER button for 10 seconds
2. Hold the POWER and UP VOLUME for 10 seconds for recovery mode
3. Hold the POWER and DOWN VOLUME for download mode for 10 seconds
If none of them works. Remove the battery and leave it off for 10 minutes. Then, return back the battery. If problem persist in the future, I would recommend to replace the battery.
Posted on Aug 30, 2011
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