How did you accomplish a destructive System Restore with the garbled display?
I would initially suspect an issue with the motherboard here - but there's a couple of steps that you can take to be sure.
First, try pressing F2 on the screen where you can press F10/F11. That will take you into the system's BIOS. Try resetting all the values to default/failsafe/optimized. There should be an option for this listed at the bottom of the screen. Don't forget to save the changes when you exit.
Next, if the garbled characters are still there, try using another monitor to ensure that it's not the monitor or cables that are at fault.
Then, try another video card to see if the garbled stuff goes away (if you purchase this card, make sure that you can return it to the store for a refund if needed).
If that doesn't fix it, then I would believe that the motherboard is the problem here. We can troubleshoot further, but it will require a system stripdown to prove/rule out the motherboard as the cause ( http://www.bleepingcomputer.com/forums/t/70216/hardware-troubleshooting-via-system-stripdown/
). Sometimes other malfunctioning components can cause the motherboard to act up.
One other step to try would be a flash of the BIOS - but I wouldn't try that until the very last step.
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