I have a slim psp with cfw 3.71 m33-4. While recovering it back to 1.50, I noticed during the process of recovery, a lot of error messages popped up, though I didn't know how to stop it. After it finished, it told me to restart my psp, which I did, and now a blank screen would appear, and my psp would turn off after a couple of seconds. I am wondering if there is anything I can do to fix this problem. -I CANNOT access the recovery menu.