[frizzlefry]

If you have no need to reflash your radio then use the task29 with splash screen. flash it from your computer via usb

You should not have to reflash the stock rom if you task29.

Just task29 then flash the rom of your choice, either from the sdcard by going into bootloader or via usb by going into bootloader, don't worry about activesync. the bootloader will change from serial to usb and then you are connected.

As always your device has to be unlocked first.

There are potentially other things that can cause the random hard resets.

corrupt sd card has been discussed

restoring apps from one rom to another with sprite backup thus importing bad registry data or data not pertinant to your new rom

and something else i cannot remember

try the task29, flash rom, add your apps via cabs and restore contacts and sms if you like with pim backup. unfortunately you can only wait and see if the problems are solved, but my experience is that they will be.