Laptop freezing when screen saver

Hi and thanks in advance for your time.
My laptop is freezing soon after the screen saver starts. In short, the sxreen saver continues but the mouse doesn't respond. I have no option but to force it to turn off using the turn on/off bottom.
I ran techtool pro and fixed permissions and rebuilt. Did not run disk warrior yet, waiting for update to arrive...
Any ideas, any advise, thanks

If it's one of Apple's preinstalled or a 3rd party screensaver, check to see if there is a plist file inside the ~/Library/Preferences folder and trash it. Restart your computer.
Boot from your install disc & run *Repair Disk* from the utility menu. To use the Install Mac OS X disc, insert the disc, and restart your computer while holding down the C key as it starts up.
Select your language.
Once on the desktop, select Utility in the menu bar.
Select Disk Utility.
Select the disk or volume in the list of disks and volumes, and then click First Aid.
Click Repair Disk.
Restart your computer when done.
Repair permissions after you reach the desktop-http://docs.info.apple.com/article.html?artnum=25751

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1. Product Name and Number
Product Name: HP Pavilion g6 Notebook Pc
Product Number: LQ283EA#ABE
2. Operating System installed
Windows 7 64-bit
3. Error message (if any)
None
4. Any changes made to your system before the issue occurred
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very loud and strange voice comes from laptop speakers ,I have to turn off laptop with long power button press;
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Gang,
I recently migrated from a G4/733 running OS 10.2.9 to a 1.9 iMac G5 running 10.3.4. This new machine sometimes freezes after the screen saver has been on for a few minutes. It's done it with the Cosmos and Nature Patterns sets. I don't think it has happened with the 2006 World Book set, but I haven't used that one for long.
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4. See also the new iMac G5 Support site.
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Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

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