all of a sudden it has started freezing from what i can tell when it is on charge, it doesn't seem to happen on battery, changing the power plan has no effect, it isn't instantaneous once plugged in it will just freeze at a point in time although it doesn't take very long, it doesn't seem to be the usual windows freeze either, i can still maby move the cursor and click on stuff (be it very very slowly and without stuff like the roll-over effects on windows buttons occurring) but it is still unusable and i have to do a hard restart. This is just occuring doing anything on the laptop from just being on the desktop to browsing and so on.

Help!





16GB RAM
2X 750GB HDD
GTX 580M
Intel (2ND GEN) i7 2820QM
Windows 8 release preview (have been running on this a long time so i doubt it is the problem)

Hi shaneZ95 and welcome to PCHF! Alot of Windows 8 users have had this problem.
You might want to read this:
Scenario: The computer is completely unresponsive (hard hang)

The Stop error code and the PowerButtonTimestamp are listed as zero. For example, consider the following scenarios:

• The Stop error BugcheckCode value is listed as zero. Circumstances can prevent writing the Stop error BugcheckCode information before the computer restarts or shuts down. In this case, a BugcheckCode value of zero is logged. Also, perhaps no Stop error occurred, and the shutdown resulted from a power loss. For example, on a portable computer, this could mean that the battery is removed or completely drained. Or, on a desktop computer, this could mean that the computer was unplugged, or a power outage occurred.
• The PowerButtonTimestamp is listed as zero. Circumstances can prevent writing the PowerButtonTimestamp information before the computer restarts or shuts down. In this case, a value of zero is logged. This can occur if the power button is pressed and held for at least four seconds when Windows has an operation running that prevents writing the event to disk. You could also see this scenario if the computer was “Hard-locked” and therefore unresponsive to any input, and the computer had to be powered off. To determine whether the computer is unresponsive, you might try to press the CAPS LOCK key to toggle the CAPS light on the keyboard.

To check whether this scenario is occurring, press the CAPS LOCK key on the keyboard. When you do this, if the CAPS LOCK light on the keyboard does not change when you press the CAPS LOCK key, the computer may be completely unresponsive (hard hang).

This scenario usually indicates a problem with the hardware. Another possibility is that a driver may cause this problem. To help isolate the problem, check the following items:

1. Overclocking: Disable overclocking and see whether the issue happens when the system is run at the correct speed.
2. Check the memory: Verify the memory by using a memory checker. Verify that each memory chip is the same speed and that it is configured correctly in the system.
3. Power Supply: Make sure that the power supply has enough wattage to appropriately handle the installed devices. If you added memory, installed a newer processor, installed additional drives, or added external devices, such devices may require more energy than the current power supply can provide consistently.
4. Overheating: Check whether the system is overheating by examining the internal temperature of the hardware.
5. Defaults: Use system defaults, and run the system.

If you see that the computer generates a Stop error that contains a BugcheckCode value that is not reported in an event ID 41, modify the restart behavior for the computer. To do this, follow these steps:

1. Right-click My Computer, and then click Properties.
2. Click Advanced system settings.
3. Click the Advanced tab.
4. In the Startup and Recovery section, click Settings.
5. Click to clear the Automatically restart check box.

Keep us updated!

Waited for it to freeze up today, and it did :/....

I can toggle caps lock and see the light accordingly.

This is a weird type of freezing, i don't appear to be able to open programs once it has frozen but can minimize/maximise/close what is already open and the roll-over effect on those buttons appear, whereas the roll-over effect for the buttons on the task bar don't appear, the mouse moves around as normal.

All temperature readings for the CPU & GPU are appearing as normal.

The power supply is fine and there is no over clocking, the memory is also fine.
I dont see any stop error being shown, i don't see any error messages, is there something is should be searching for? (im no computer engineer).
I modified the restart behaviour and waited for a freeze which occurred as normal, i don't know what the restart behaviour change should have done but nothing as it appears, although there was a different type of freeze this time with me still being able to move the cursor but i couldn't close/minimise open programs or see any roll-over effects or move the cursor to the task-bar.