LG Thrive Boot Loop

I need help! I was watching a video on how to install gingerbread on my LG Thrive P506. The tutorial said that I had to download ROM Manager, CWM, Gingerbreak, Cyna...Mod7 (CM7), and some Kernel. When I tried to install CM7 using ROM Manager, I forgot to wipe data and cache. I think that is the reason that my phone is now stuck in boot loop.
I can't go into recovery mode, and I also tried the Fastboot method (download recovery.img file and reboot phone using command prompt and fastboot.exe). When I tried this method, my phone showed an image of a charging battery, after which it went to sleep. When I held down the sleep/wake button, my phone again went into a boot loop. Please help me! I have been doing this for the past 5 hours, and have been searching all over the internet for a fix!