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BlackBerry® Bold™

New Member
Posts: 1
Registered: ‎03-05-2013
My Device: Blackberry Bold 9790

bold 9790, dead battery, keeps rebooting, won't turn on



I've had my Blackberry Bold 9790 for about a year now, and lately it has been rebooting itself up to 10 times a day; 

For example,

When I use twitter sometimes it reboots itself, the same with any other internet based apps, also it tends to reboot itself 4 times before it works again. 


Now, it has given me the dead battery sign twice, the first time I tried to download the OS 7.1 software and it seemed to work, but it stayed on the 7.0 software. 

This time the dead battery sign is showing and the phone won't connect to my computer at all, my laptop registers that it's plugged in, but it doesn't connect properly, so it won't allow me to either restore my phone or download newer software. 


I have also tried plugging it into the mains charger and then taking the battery out and putting it back in, the 4 hour solution and that hasn't worked either. 


I was just wondering if anyone knew what I could do to fix my phone, before I use my last resort of taking it back into the shop. 



Hall of Famer II
Posts: 49,094
Registered: ‎11-28-2008
My Device: Z30, Z10 & Q10 (, Playbook (

Re: bold 9790, dead battery, keeps rebooting, won't turn on

Hi and Welcome to the Community!


I believe you already tried this...but just in case...pPlease try this sequence...note that, throughout the entire 4h15m process, your BB must remain connected to a known-good wall charger (not PC USB):

  1. With the battery inside, connect your BB to the wall charger
  2. Leave it alone for 2 hours, no matter what the LED or the display does
  3. Remove the battery
  4. Wait 15 minutes
  5. Insert the battery
  6. Wait another 2 hours, no matter what the LED or the display does

This has been known to "kick start" some BBs.

It is also possible that your battery or BB has experienced a problem...to test, this sequence is needed:

  1. Obtain a known good and already fully charged additional battery...use it in your BB and see what happens
  2. Obtain access to a known good and identical BB...use your battery in it and see what happens

The results of this will indicate if it's your BB or your battery that has the problem.

Good luck and let us know!

Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
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