As previously posted, this error usually will be related to a hardware problem. One of the causes for this error can be hot plugging a PCI-E device which can cause an incorrect value which causes a mismatch between the PCI-E bus and the device on the PCI-E. This is why it is normally suggested to remove the peripheral devices as previously posted. But there are other hardware items which could cause this error as well. Another of these is overheating. This could also a problem with the RAM, or improper voltages. The ePowerTray.exe is a power management application similar to the Power Options in the Control Panel of Windows 7, except this regulates the battery power. This isn't essential and can be disabled in the startup as previously posted.
As previously posted, this problem could also be related to hardware on the motherboard, I have already suggested that the RAM could be at fault, but the CPU could be a potential candidate for this as well if the computer has been overheating.
if that doesn't do it, it's likely something on the motherboard that needs to be replaced, possibly the video card.
This is a notebook, the graphics is integrated on the motherboard. In order to replace this it would require replacing the motherboard, not the video card.
To check the RAM please do the following.
1) Please download the Memtest86
Pre-Compiled Bootable ISO file.
2) Unzip the downloaded memtest86
file. You will need a program like 7-Zip
to unzip this file.
3) Inside, you will find the memtest86 file.
5) Insert blank CD into your CD drive.
6) Open ImgBurn, and click on Write image file to disc.
7) Click on the Browse for a file... icon:
8) Locate the memtest86 file, and click on the Open button.
9) Click on the blue arrow to start burning bootable memtest86 CD.
10) Once the CD is created, boot from it, and memtest will automatically start to run.
Please note: It may be neccessary to change the boot order in the BIOS so the CD/DVD-ROM is the first device in the boot order and the hdd second.
Each pass consists of 8 tests, it is suggested that you run at least 7 passes, this will take several hours, you may find it simpler to let it run overnight. The longer you run the passes the more comprehensive the results will be.
If you are running multiple modules and have a failure, remove all but one module and test it separately, continue this with each module till you find the one that failed.
When you discern that a module is good, use it to test each slot to be sure there isn't a problem with one of them.
When the test is complete a display similar to the one below will appear. Note the locations of the Pass and Errors, any Error is indicative of a failed module.
I apologize for not being able to respond sooner, I had to go out of town unexpectedly.
Edited by dc3, 27 September 2013 - 09:06 AM.