[Xperia Play Q&A, Help & Troubleshooting] Dousan:
(Tittle changed from *Phone won't boot with sdcard inserted*)

I woke up this morning and my phone was just dead over night. I thought well the battery just drained but no. First it wouldn't charge, no red led lighting up on the power button. After 15 min. in the wall charger and no sign of charging i hooked it up on my netbook. About five min. went on and then the red led shined and i thought yes and tried booting but just a vibrate once and a black screen.

I was running latest 4.0.A.2.368, rooted, unlocked bl, doomlord's kernel and @thomassafca's samsung theme when this happened.

Tested fastboot mode and flash mode all good there, blue and green light.

Then i re-flashed doomlords kernel and it rebooted to the point of *sony ericsson* on the screeen and went black and then the charging icon and orange led.

Took out the battery and inserted it again and booted up. Again only vibrate once and then black screen.

Then flashed kernel.sin with flashtool, still the vibrate once and black screen.

So i was a bit lost and took out sim and sdcard and flashed 4.0A.2.368 ftf file posted by @thomassafca and it booted fine. Then i turned it off and inserted the sim and booted up. It booted just fine. Then inserted the sdcard and again vibrate once and black screen.

Then formated the sdcard extFat still no boot, tried Fat32 no boot, tried a card from my old nokia wich should be formatted correct since it also run on a linux base (maemo) no boot.

I'm a bit lost on what to do to make my phone boot with sdcard again.

Have been working with no issues at all since i flashed the new firmware/unlocked bl/flashed kernel/rooted.

Any help will or if someone could explain what happened will be great :D

Regards Dousan...

e: Ok a slight change in this. The phone when turned of won't boot again unless i take out battery and insert again. When booted into the phone i inserted the sdcard and mounted it and now it boots with the sdcard, but still the same issue of having to take out the battery to boot when turned off?

e2: Tried adb reboot and it seems to go in a bootloop. It connects to the pc and disconnects (windows sound plinging connected disconnected) and i can adb devices and a connected device number appears after the first pling and after the second pling there's no device to be found with adb and then it just goes on and on till i disconnect and pull the battery and boot? All this is with a black screen not even *sony ericsson* appears.

e3: Reflashed it with the latest fw and without pulling battery it booted right up and i thought, yes, problem solved. Went through setup and then turned it off and booted the phone and still vibrate once and a black screen. Pulled out battery and botted again and still vibrate and black screen? So pulled it out again and sdcard and it booted up fine. Inserted the sdcard when on and mounted it and it works, but still the boot problem?

After the reflash the vibrate felt different, stronger, and after i pulled the battery it's weaker.

e4:Flashed doomlords kernel again and rooted, still same issue?

e5: Solved problem by flashing doomlords kernel v2 for fw 4.0.A.2.368. After flashing it booted with the kernels new boot txt and then it turned off and the charging icon showed. Then booted into cwm and wiped dalvick cache and battery stats. Then rebooted from cwm and it booted up. To make sure problem was resolved I tried 2 times in a row to reboot with quick boot and it booted without me having to pull the battery :D Thanks all for your suggestions ;)