It cannot be the card that doesn't like them. Let's try this:
1)Move back the installed channels that aren't working from sd to the wii internal trough the wii data management. Then download and extract "Any title deleter mod"
http://dl.dropbox.com/u/5562654/AnyTitleDeleterMODv71.rar launch it and delete the installed games from here (because deleting them from the wii data management doesn't delete them entirely, the ticket still remains in the wii)
2)Download and extract into sd/apps "Yet another wad manager mod"
https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/yawmm/YAWMM.zip and try tore install the gamws using it. When requested select IOS236, front sd card, no nand emulation and then select the wad and install it.
3)Try to enable the region free using priiloader. To do this:
A)Update your Hbc and install bootmii Ios: download the Hackmii installer 1.2 here
https://bootmii.org/download/ extract his folder to sd/apps, launch trough Homebrew channel and follow the on screen instructions to update/install both
B)download priiloader from here
http://www.dacotaco.com/dlpriiloader.php?ver=0_8_1 extract it and overwrite the version present in your sd/apps (because we are not sure if it is the latest version, is better to update rewriting it) then download the hacks.ini located here
http://wiibrew.org/w/images/e/eb/Priiloader_hacks.zip and extract the folders into your pc. Get into the folder 4_x, then into 4_3 and then copy the file hacks_hash.ini located here into sd/apps/priiloader, you have to copy only this file because is specific for your system menu, the 4.3.
Launch priiloader trough hbc and install it.
C)Now We must enable the priiloader hacks, shutdown the wii holding the power button on the front of the console until the led becomes red. Now turn on the wii HOLDING BOTH the power and reset button and priiloader will appear. Go to "system menu hacks", you need to enable "region free channels" pressing the A button. You should consider to enable something else, like " block disc updates" (to block the updates from discs that will mess up your softmod, the game will boot skipping the update partition), "block online updates" (it will block online updates from the wii system menu that can mess up your softmod), "region free gc games"/"region free wii games"/"region free everything" (to make the retail games region free) "remove nocopy protection" to unlock the copy of protected saves), "replace health screen with back menu" (if you are bored from the health screen everytime you turn on your wii), "Autonpress A at health screen" (if you want to see the health screen but without the need of pressing A) "move the disc channel" (if you want to move the disc channle somewhere else).
You can find my configuration in photo.
IMPORTANT! REMEMBER TO HIGHLITE "SAVE SETTINGS" IN THE LAST LINE (NEAR TO "BLOCK ONLINE DISC UPDA") AND THEN PRESS THE A BUTTON OR THIS HACKS CONFIGURATION WILL NOT BE SAVED AND THE HACKS WILL HAVE NO EFFECT!
A "settings saved" confirmation line will appear. Press b button to go back, then select system menu and press A to go to the wii menu.
3)Let's make a wii nand backup, go to the homebrew channel, press home, launch bootmii and using the console power button to move and the console reset button tomake a selection bo to the setrings screen and then choose the nand backup (the icon with an arrow that goes from a chip to the sd card)
In the end, try to move back the games trough the SD card and boot them.
Let me know