Constantly Crashing 755p

[ShadowX]

Ok about 3 or 4 weeks ago one day my 755 just reset all by itself but then it froze I let it sit for about 5 mins then I removed the battery it came back all good or so I thought.

When the screen came back to the default phone screen I noticed that all my programs serial codes were gone that was the first problem. The second thing is I cant press the calendar button at all because if I do it resets the phone. And the third problem is I cant Hotsync my phone at all when I hit the Hotsync button on my usb cord it just resets.

So what Im thinking is a Hard Reset is needed to fix the problem or so I have hoped but I tried a few things I had not added any new problems before the inital reset that started all this but I removed all my programs anyway.

That didnt help so I really have no clue what to do at this point I would like to Hotsync my numbers at least but if that is no longer an option I guess I could just write them all down

So any help with this would be very much appreciated.

Thanks in advance

Update 1:
I dont know if this will be any help but I just installed the Safeguard program that I read was suppose to help with fixing the problem well here what the crash log said when I did the following.

Press the Calendar button w/ Radio On
Cause: StringMgr .c, Line:68 , NULL string passed

Now in the white box the first time it said IM and the second time it says TSPI

So when I hit the Hotsync button this is what it says
Cause: StringMgr .c, Line:68 , NULL string passed

But there is nothing in the white box like before

Update 2:
In the What Caused the Crash when I click the Calendar button it says
App Name/Reason Confidence
Calendar-PDat HIGH

Under the Hotsync button issue it says
App Name/Reason Confidence
MMConduit-asc6 LOW
Safeguard Medium

Ill try the DBFixIt next and let you know my results

Update 3:
OK I just ran the DBFixIt and there we two errors in the Tasks and I deleted both but the phone still resets when I hit Calendar

[ShadowX]

Another update I just scan the phone with TealScan to see if there were any database problem and none were found. Im guessing a hard reset is my only option it seems.

[blueonblackstrat]

What third party apps do you have installed? I had ringo, for about an hour the other day... it messed my phone up something awful! I ended up having to delete it. Then I did a hard reset, things are back to normal now.