After Snow Leopard install, my Mac won't restart or shut down...

...and when I attempted to install 10.6.1 update, it WILL NOT restart, hence NO update. It's functional, but stuck. Any suggestions? What details/info. do you need to make a suggestion?
Thanks for your assistance.
Chris

Hello Chris:
There is a reasonable possibility that you have a hardware problem (not what you wish to hear).
However, try a couple of things (if you are able to) in sequence. If the problem goes away, quit!
1. If you have installed it, remove any third-party memory (OS X is notoriously picky about memory).
2. Boot from the software install DVD while holding the "D" key down. That will invoke Apple's hardware checker.
3. Boot from the software install DVD and run repair disk (not permissions, that is different).
4. Reinstall OS X 10.6 from the install DVD.
If none of that helps, I am afraid you should go to an Apple store or Apple certified technician for diagnosis.
Barry
Message was edited by: Barry Hemphill

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Type: Empty
Speed: Empty
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Manufacturer: Empty
Part Number: Empty
Serial Number: Empty
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Part Number: 0x3138484631323837324A4438304544364434
Serial Number: 0xD8344473
DIMM Riser A/DIMM 2:
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Type: Empty
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Manufacturer: Empty
Part Number: Empty
Serial Number: Empty
DIMM Riser B/DIMM 3:
Size: Empty
Type: Empty
Speed: Empty
Status: Empty
Manufacturer: Empty
Part Number: Empty
Serial Number: Empty
DIMM Riser B/DIMM 4:
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Type: Empty
Speed: Empty
Status: Empty
Manufacturer: Empty
Part Number: Empty
Serial Number: Empty
DIMM Riser A/DIMM 3:
Size: Empty
Type: Empty
Speed: Empty
Status: Empty
Manufacturer: Empty
Part Number: Empty
Serial Number: Empty
DIMM Riser A/DIMM 4:
Size: Empty
Type: Empty
Speed: Empty
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Manufacturer: Empty
Part Number: Empty
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Message was edited by: Attila Szegedi

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After Snow Leopard install, my Mac won't restart or shut down...

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