Okay, my cell phone has been working fine up and till yesterday. I was in the middle of a phone call when suddenly it restarted on me and started flashing a red light, it looked like it wanted to boot up again as it showed the white screen with the hour glass centered, but before it can boot up the screen goes black and the red light flashes again and it does the same thing over and over. I'm for certain that I've left the phone on the charger all night long prior to yesterday, and when I was on the phone the battery was more than half way filled. I've read guides that said I had to re-install the OS, I try to do that but the phone won't stay on long enough, it just keeps going off and my PC makes a new hardware detected sound then quickly makes the unplugged sound. Help please?

The first thing I would try is a new or known working battery. Perhaps you can get the folks at Tmobile to help with that. The next suggestion I have seen is to wipe and reload the OS using JL_Commander. Hopefully you have a back up of your data to restore as this process will obviously remove your data. Given the hour I would imagine you will get a few more suggestions than I can offer as it gets a little later in the morning.

How do I wipe the BlackBerry using Jl Cmder? - BlackBerryFAQ

What to do next if Jl Cmder will not connect and wipe - BlackBerryFAQ

I've tried both of those methods, but the problem is my phone won't stay on long enough for the process to finish, it just keeps going through an endless cycle of rebooting, which causes my PC to make the plugged/unplugged sound over and over. I've tried re-installing the OS but it won't get past the reconnecting to JVM part, it always ends there.

DId you try the new battery yet?

I have, and it won't work still.

Do you have an SD card installed?? If so try taking it out as there have been some reboot issues with SD cards and 4.5 upgrades. I have seen ways to make it connect using the above noted threads that involved pluggin the phone into the computer with the battery out then inserting the battery I believe right as it detects the phone. I am just not sure off hand how that was done.

Okay I took my phone out to T-mobile, and thankfully I'm still under warranty, they are going to mail me a new phone. It turns out it was a software error.

That's good. Glad they are taking care of you. I was out of answers.