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View Full Version : G74SX locks up when going to sleep.



two250
07-09-2012, 06:11 PM
Hey guys, new here but I did some searching before posting and found no answers. I have a G74SX-BBK7 and every once in a while when I put it to sleep it will lock up. More specifically I will press FN+F1, the screen will turn off like it's supposed to, but then it locks up. The PC stays running, fans are on, WiFi and power LED's are still lit. I can't do anything, it won't fully power off or wake back up. I have to hold the power button down to shut it down. Any ideas?

Here is my system in case it helps...

G74SX-BBK7
Intel i7-2630qm
Win 7 Ultimate 64bit
Nvidia GTX560M 301.42 Driver

two250
07-12-2012, 06:29 PM
Anyone have an idea?

dstrakele
07-12-2012, 07:14 PM
1) What software, particularly Antivirus, AntiMalware, Firewall, Remote Access, or Disk Management software, have you installed to your G74SX?

2) What applications are running when you put the laptop to sleep and it locks up?

3) Do Warnings or Errors in the Windows System or Application Event Log indicate any application is having problems, or point to a troubleshooting direction?

4) Are you running the ASUS Factory OS with Bloatware, or a clean Windows 7 installation?

5) Has this issue just started recently? If so, you could try using Windows System Restore to restore your system to a time before the problem occurred.

6) Do you always put your laptop to sleep until it eventually locks up? OR do you shut it down completely on a regular basis?

two250
07-13-2012, 11:26 PM
1) What software, particularly Antivirus, AntiMalware, Firewall, Remote Access, or Disk Management software, have you installed to your G74SX?

2) What applications are running when you put the laptop to sleep and it locks up?

3) Do Warnings or Errors in the Windows System or Application Event Log indicate any application is having problems, or point to a troubleshooting direction?

4) Are you running the ASUS Factory OS with Bloatware, or a clean Windows 7 installation?

5) Has this issue just started recently? If so, you could try using Windows System Restore to restore your system to a time before the problem occurred.

6) Do you always put your laptop to sleep until it eventually locks up? OR do you shut it down completely on a regular basis?
1. The only 3rd party software I am running in relation to those is ESET NOD 32 antivirus.

2. Usually Firefox, OSDM (a software used for my work), and notepad.

3. I see no warnings leading up to the lock up, only warnings of programs starting back up after I forcefully shut it down and reboot.

4. Clean Win 7 Ultimate. Never even booted it up with the factory OS.

5. Noticed about a month ago, pulled my laptop out of my bag and it was very hot because it stayed on (but locked up). I thought I was just dumb and forgot to put it asleep, then the morning I posted this I noticed it stayed on when I put it to sleep, but it wouldn't respond.

6.I always put it to sleep. Never shut down or restart unless it has an issue or and update forces me to.

Thanks for the help!

dstrakele
07-14-2012, 08:22 PM
How often do the lockups when entering sleep occur? In other words, how many times can you Sleep/Hibernate your system before a lockup occurs?

On all Windows systems, there are memory leaks. A process requests memory resources from the OS to do a job and is supposed to free those resources back to the OS when finished, or when the application is shut down. However, due to poor coding, some processes may fail to release the memory they are allocated. As a result, they use more and more memory over time.

Eventually, one of 2 things will happen, a) the OS runs out of memory (typically this is the Nonpaged Memory pool, a special pool of memory used by the OS that is a smaller subset of total RAM) and the system locks up or BSOD's, or more commonly, 2) the memory is freed and recovered by the OS on a system restart.

When you Sleep or Hibernate a system, the current memory snapshot is saved and read back into RAM on Resume. Since this is not a Restart, the leaked memory is stilll held by the errant process and is not freed to the OS. More and more memory will be consumed by the errant process until a Restart occurs.

Your habit of only Sleeping or Hibernating your system will ALWAYS end in a lockup due to leaked memory. It is only a matter of time...

If you launch Task Manager and configure it to show Nonpaged Memory in use, the number of Handles, or number of GDI Objects in use by a process, and sort them in descending order by these fields, the processes leaking memory or specific memory objects will rise to the top of the list over time. There are better methods of identifying processes that leak memory if you search the Internet.

Once an errant process is identified, a case can be opened with the developer of the program that uses the process to initiate a code change to resolve the issue. This is a never-ending battle as the OS and other 3rd Party drivers are constantly updated, resulting in new memory leaks.

My recommendation is to a) attempt to identify the errant process if you only get a couple of Sleep/Hibernations before lockup, or b) throw a System Restart in every few days to allow the OS to recover leaked memory.

If the lockup only occurs when you Hibernate the system, you could try recreating C:\HIBERFIL.SYS, where the memory snapshot is stored, by disabling Hibernation from an elevated Command Prompt using powercfg -h off, to delete the file, then enabling Hibernation with powercfg -h on to recreate hiberfil.sys.

Some programs may just not play nice with Sleep/Hibernate. That's why I asked you what programs are in use when you initiate it. If you could identify such a problem program or process through trial and error, simply shutting the problem program down before Sleep/Hibernate could work around your lockup issue.

two250
07-18-2012, 04:02 PM
Thanks for the info. I thought it was strange because I had been putting it to sleep for many months with no issues, then suddenly 3 lock ups in a month. Now it hasn't done it since I made this thread, but I did update the bios the same day I made this thread. Anyway so you where basically saying it could be running out of ram? Because when I put it to sleep I'm usually using 3-4 gb of my available 8...

dstrakele
07-18-2012, 04:24 PM
Typically this is the Nonpaged Memory pool, a special pool of memory used by the OS that is a smaller subset of total RAM.

two250
07-20-2012, 06:22 PM
Cool thanks for the help! Glad to know it's not something more critical going on...