Cracked screen, unit is dead, will not turn on,lens will not come

First press the DISP or DISPLAY button to see if that corrects the problem. If not, a stuck shutter is another common failure mode for digital cameras. The symptoms of a stuck or "sticky" shutter are very similar to CCD image sensor failure. The camera may take black pictures (for shutter stuck closed), or the pictures may be very bright and overexposed, sometimes with lines, especially when taken outdoors (for shutter stuck open).
To confirm a stuck shutter, put the camera in any mode other than "Auto", and turn the flash OFF (you don't want to blind yourself for the next step). Next look down the lens and take a picture. You should see a tiny flicker in the center of the lens as the shutter opens and closes. If no movement is seen, then you likely have a stuck shutter. If so, please see this link for further info and a simple fix that may help.

You need to go into the setup menu and turn on the display. This is sometimes turned off when you use the optical viewer or in low power modes. Your user manual will show you how to do this step by step.

Did you drop the camera on the lens?
You have to replace the barrel (cost around 175,00 euro)
try to find a cheap second hand camera en replace the lens unit...

try to take video on Movie mode, if you won't get picture on LCD the CCD is dead. That means you need to replace the whole zoom lens. it costs a lot, not worth to repair.

the camera need to be serviced the lens repaired or replaced. do a google search for mike's digital camera repair. for low cost repair.

If these cameras are less than a year old then they are still under warranty, and Olympus repair shops( found on their website) will repair them for free minus shipping charges. The lenses probably have broken gears or have just been pushed out of alignment and can be repaired by someone mechanically inclined and very gentle with components. Can find good used and or possibly new lenses on ebay. Not that hard to replace.

I'd recommend that you stop banging or fiddling with the lens as it does not sound like a lens error (if it were so, you'd still get an error even in review mode). Instead it sounds like the brand of batteries that you're using may not be providing sufficient power.

Alkaline batteries just don't have the power for more than a few pics in a digital camera. Some may even have problems just powering startup of the camera. Digital cameras for the most part should only be used with rechargeable NiMH batteries. Most retailers sells these for around $7 for a package of four (about $15-19 for the batteries with charger). Keep in mind they'll save you big bucks in the long run over alkalines, AND they'll last for at least 100 pictures per charge (and probably many many more). You'll be very pleased with their performance, and may slap yourself for not buying them sooner. When at the store, look on the package for a power rating of at least 2500 mah.

Here are some simple things to try first for a camera that won't power on:
http://camerarepair.blogspot.com/2007/11/simple-fix-for-dead-cameras-that-wont.html

your lens is possibly damaged or seriously out of alignment - replacing lens is easier , than opening the camera ( hard to believe how many tiny screws etc . are in the way ) plus if you do open it . . . ? few technicians will work on it , after .

This sounds like what started happening with my camera a few weeks ago. I found that turning the LCD screen off during picture-taking allows me to take pictures. I then have to go into review mode to look at the pictures I took using the LCD screen. Definitely not a great fix. I'm trying to locate a firmware upgrade that may solve it.