I searched a bit in the forums and it appears that not being able to wake from sleep is a common problem when running Vista, for a variety of ThinkPads and other notebooks.
Here are some things you can try (links aren't to instructions but rather to original posts):
Press F1 at Thinkpad boot screen to get to BIOS setup. Then go to Security section and change the setting for Security Chip from Inactive to Active.This has worked for several people.
If you don't want to activate your security chip, an alternative might be to uninstall the Client Security Solution software. (I only speculate this might help the sleep problem.)
Install the latest ACPI Power Management and Power Manager drivers from the Device Driver Matrix. Also install the latest Intel turbo memory driver or matrix storage driver. (May as well update your other drivers too.)
Install or re-install Windows update "CAPICOM-KB931906-v2102". While you're at it, install all Vista updates.
Check event viewer for device drivers that are misbehaving on resuming from sleep.
Use hibernate instead of sleep.
There are scattered reports (example) that wake-from sleep was fixed by replacing the planar/motherboard. Others report that this did not fix the problem. I'm inclined to believe that in the vast majority of cases, the motherboard is NOT the problem. But if you've exhausted your other options you might want to explore that while your machine is still under warranty.
When waking your Thinkpad, use the Fn key (alone).
Please report success or failure. It would be most helpful to others if you include:
- Your machine type (7 digits XXXX-XXX); do not include your serial number;
- The OS you're running (presumably Vista): 32 or 64 bit;
- How you got wake-from-sleep to work on your machine.
Good luck, and thanks for your reports.
