You can format the MicroSD card, and re-install the latest r4i sdhc kernel. Mostly, the problem can be fixed. It it still not work, you can contact the reseller for replace. The connection may be not well. just make them connect firmly.
to fix the everlasting loading screen on the R4 DS, get an earlier version of the software. I found a file called English-1.12 which when loaded fixes the loading problem.
you reformat it
Have you tried deleting your addons?
What do you mean?If your mac is loading slow on startup, it is most likelyto do with its SSD; so I'd recommend getting that checked out, or clearing up some space :)
U do it
Take the battery out and let it cool down
Try running it on VMware
you cant
Restart your computer
Get your OS CD [e.g Windows XP Professional SP2] and reinstall it.
Check on the Steam Support or the Steam Forums. http://store.steampowered.com/forums/ https://support.steampowered.com/
you sell it saying its jailbroken and get ritch and buy a new one