Computer goes in to sleep/ hibernate mode and I can not wake it up without shutting it off, and restarting
If we are talking "hibernate", then that's what the computer does - it saves the whole memory contents on the hard disk and shuts down. You then have to power it up and it boots like always on power up, but instead of loading the system the usual way, it reads the hibernation file and restores the state in which it was when hibernated.
"Sleep" or "standby" mode is different - the system stops execution of all the running programs, switches the processor into low-speed, low-power mode, executing only the basic functions of waiting for wake-up signal. Depending on machine and settings, it will be woken up by keyboard event, system event (like laptop battery running out - time to hibernate), network activity, or the power switch.
It should wake up when the Fn key on keyboard is pressed, the lid is lfted up (if it was closed of course), or when you momentarily press the power button. If it does not, then something is wrong with your ACPI/Power Management setup, and/or there are some drivers missing or corrupt. You can try going to IBM/Lenovo website and looking for updated system drivers for your model.
Dec 03, 2009 |
IBM ThinkPad T43 Notebook