The following information was originally posted in the Google Chrome Notebook Pilot Group [footnote=Google Chrome Notebook Pilot Group][/footnote] by NTW. [footnote=NTW][/footnote]
With his permission I re-posted it here.

For those of use on the Dev channel who are having the problem with the 'white-screen', here is a effective workaround:

[h=Part 1:]4[/h] If you are having the 'white screen' (where Chrome goes unresponsive), you will need to restore your system to factory default. DON'T BE SCARED! Chrome saves all of your settings and themes to the cloud, so as soon as you sign in using your Google account, all your stuff will be just like you left it (without the white screen).

For those of you that prefer videos, here's a link to a Youtube video on restoring you Chromebook to factory default [it's not my video, if you were wondering]: http://www.youtube.com/watch?v=UVrI3IyKo3E Otherwise, use the step-by-step directions below.

Step 1: Turn off your Chromebook and take the battery out. If you look closely, you should notice a small piece of black tape by where the battery connects (see video if you can't find it). If you remove that piece of tape, you'll find a small white switch. Move it all the way to the left to active recovery mode. Put your batter back in and turn your Chromebook on.

Step 2: After you turn your Chromebook on, you should see a picture that looks like a CR-48 with a sad face and a USB stick. It may say 'press the space bar', which will put it into recovery mode.

Step 3: Turn your Chromebook off, take the battery out, and flip the same white switch all the way to the right, back to the way it originally was. Then put the battery back and turn your Chromebook back on.

Step 4: When you turn it back on, it should look like it is booting normally and take you to your normal login screen. It won't look like anything has changed, but when you try to sign into your account, your Chromebook with shut off.

Step 5: Press the power button and watch the magic! It should boot Chrome again, but if you look in the upper left-hand corner, it will say something like 'erasing stateful partition'. Then it should reboot and take you through the same setup you went through when you first got it. If you setup with the same Google account you did originally, you should have all the same themes, extensions, etc. Before you do anything else, read the following (part 2).

[h=Part 2:]4[/h] Now your Chromebook should be working again, but you need to follow these steps to be sure you don't go back to the 'white screen' again.

Step 1: In your address bar, type about:flags. Scroll through the list and be sure everything is disabled. Find Web Page Prerendering and be sure 'Always Disabled' is selected from the drop-down menu.

Step 2: Click the wrench icon in the upper right-hand corner and selected Settings. Then select Personal Stuff from the left-hand side. Be sure that 'Require Password To Wake Up From Sleep' is disabled, or unchecked.

Step 3: Whatever you do, DO NOT sign out of your user account. If you do, you will have the white screen issue again when you sign back in. Also, DO NOT power off your Chromebook and DO NOT let the battery run all the way down (as you will be signed out of your account when Chrome closes). You must stay signed into your account at all times! If you followed step two, you are free to close the lid to your Chromebook, because you aren't required to sign back in. The sign-in seems to be what is triggering the white screen problem.

Keep an eye out for an update from Google, it will hopefully fix this problem!


References
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