Followed instructions on my first phone a couple of months back with no problems, the best rom ever! tried it yesterday and when I am done it flashes the LG and then goes to a blank screen (black but still lit up) and sounds like it loads completely. I can even get it to go to sleep and wake up but it is blank so I can't tell what buttons I am hitting. I can get this rom (aospCMod-OV-20110307-signed) to work but when I switch to yours, blank screen again. any ideas or tricks. The phone is the LG Optimus V.
Some times you can get a corrupt download, especially if you download using your phone because of the slower speed. Try downloading and doing a fresh install of the ROM and gapps,making sure you do all these things:
1.wipe cache partition.
2.wipe dalvik cache(advanced section)
3.wipe data/factory reset.Now that your rooted
YOU MUST NEVER USE THE FACTORY RESET IN THE PRIVACY MENU ON THE PHONE
4.format boot,system,data,and cache
5.go to install zip from sd card
6.go to select zip from sd card,chose the ROM first. It will go thru the install procedure. When done go back to step 6. and select the gapps.
Try waiting to install the theme,if you might like to,until after you have installed the ROM and gapps,and rebooted a couple of times.If you want to install a theme all you have to do is go into the recovery and wipe cache partition and dalvik cache,then do the same thing you did to install the ROM(theme must remain zipped)
When you need to install an update to an installed ROM,all you have to do is wipe cache,and dalvik.
To change the boot animation (must remain zipped) go to /system/media(make sure that you have changed permission of the system from r/o to r/w) and delete the boot animation found there. Then copy the boot animation you have on the sd card and paste it where the old animation used to be(on next reboot it will be there)
If after doing this it still leaves you with the same problem then try
jack454 Idea.
You might also try this
[FIX]Black screen with custom recovery and custom roms - Android Forums