01-02-2012 12:39 AM
I've recently installed my L512 with Win7 Enterprise, 64 bit edition. Run Lenovo System Update, all drivers are properly installed.
The machine freezes randomly, 1-2 times a day. There is no Blue Screen of Death, only it hangs. For hours, if i leave the machine alone. Then I have to restart by pushing the off button.
There is absolutely no event in the event log regarding the crash. Dear Lenovo, please investigate this.
Checks I've done:
- cloned HDD to another HDD - crash still comes.
- reinstalled Win7 - crash still comes.
- went back to XP (with totally same hardware) - NO crash
According to my opinion, it must be some driver issue. Anyone any idea how to fix this fast? Thanks!
Solved! Go to Solution.
01-04-2012 05:34 PM
01-16-2012 11:12 PM
unfortunately the method did not work. Lenovo, please test this in your lab.
We have ca. 150 lenovo laptops in our company, I work for the IT dept., and this L512 is my own laptop.
If I cannot get the machine to work, our next laptop purchase will be HP or DELL. This is unacceptable. Even if I make a clean install of Win7 x64, and run a full Lenovo System Update, the laptop freezes within 30 Minutes.
Please escalate this issue to the responsible team.
02-13-2012 08:29 AM
I'm also having this problem. Please let me know when this is fixed. I'm using my first Lenovo but not my first Windows 7 64 bit computer. I've never seen this type of instability before - and there's no event log message for me to use to diagnose the problem.
02-16-2012 07:11 AM
I got the freeze problem to stop!
I started uninstalling Lenovo specific programs. At the first batch of uninstalls the freezing continued:
ThinkVantage Access connections,
thinkVantage Active Proction System
ThinkVantage communications utility
However when I uninstalled the following four items, the freezing stopped:
Thinkpad power manager
thinkpad power manager driver
Thinkpad ultranav driver
thinkpad ultarnav utility
My money is on the Thinkpad power manager and driver for being the problem - as I noticed earlier that I could decrease the frequency of the freeze episodes by changing my power setting for maximum power use.
However I'm including the full list of items I uninstalled in case the issue is a conflict between programs or drivers.
11-20-2012 10:44 AM - edited 11-20-2012 10:48 AM
FYI this fix works for L412 machines that have the exact same problem.
Also, I can confirm it is just the "Lenovo Power Management Driver" that is the culprit.
Thank you to PaigePB as I have been fighting with this problem for 2 months, with no luck until now.