Cannot Sync to PC

This is worth repeating as the key is, When the laptop is on battery power, and when its plugged into the wall, its a different story.

About the Snapdragon/Scorpion being power hungry, It uses less juice then the a older 600 mhz core, though, this is a Prof type of device and has many options such as Hi-speed HSPA,Wi-Fi, Blue Tooth, scanner etc...and when all on and combined they can easily exceed the power input of 500mah, though in idle state, a charge is possible at 500mah.


About the new cable, that may be worth testing out indeed, before ROM start getting flashed lol.
WR

maybe it is your pc. do you use active sync or device center

Do you have Advanced Networking turned off under Settings>Connections>USB-to-PC?

FWIW I'm syncing my eXpo to a XP/Activesync desktop and a W764/MDC laptop.  Both using the LG supplied cable.  Neither works as reliably as my ol' 8125, but the W7 laptop is noticably worse.

My first post here, so bear with me
I can confirm that using a different cable does indeed provide a stably sync connection between the PC (Win 7 x64) and the GW820. Last time I tried syncing with supplied cable was when I first got the phone in december, and could not get a stable connection for the life of me, I even installed all the LG drivers I could find online, nothing worked it just kept disconnecting after a few seconds repeatedly. Now, after reading this great thread, I decided to give it a try, and used a supplied micro usb cable that came with my logitech mouse, which I use to charge it. I reistalled the windows device center, connected the phone and bam, no disconnects for over 20minutes it was connected! So, either the supplied cable is defective or there have been some windows updates that fixed this issue, either way, Im stoked I can finally sync my phone with my computer.
Update: I just tried the supplied cable again, and the sync diconnected after about 20 seconds and reconnected, and did that several times in a row. so the cable is definitely the culprit.