Latitude E6400 Freezes Randomly

Hi, sorry for the multiple "plea for help" posts on this forum. I am running Windows 7 64-Bit, A32 BIOS.

My Latitude E6400 keeps freezing randomly. It doesn't do a BSOD, the screen just freezes and if any audio is playing the audio makes a "bzzzz" noise. Ctrl + Alt + Delete doesn't do anything. However I can still boot into the Thermal Control Panel (FN + R) and modify my fan speeds, which makes me think the GPU isn't the problem. Sometimes the Laptop freezes after 5 hours use, sometimes after 1 hour use, sometimes after 20 minutes use. It has frozen when I've started to watch a YouTube video, editing something in Paint.NET, browsing my email etc.

The CPU is always cool and doesn't have much load on it when it freezes.

I've ran memtest86 and the RAM passed fine. When running Windows 7 I constantly have 1.6/2GB RAM being used up.

I plugged the Hard Drive into my PC and ran the Western Digital Diagnostic tool on the hard drive and it passed the extended test.

I checked if anything occurs in the Event Viewer and it only says that I shutdown the system unexpectedly (which I'm forced to do when it freezes.)

I'm starting to think it's a driver problem since i don't think it'd be the RAM, Hard Drive, GPU or CPU. I tried running a Prime95 test for 20 min but the Laptop didn't freeze.

The solution's I've tried already are:

Installing the Intel Matrix Storage Driver
Unchecking "Allow windows to turn this device off to save power" on the WiFi card in device manager.

The only things I haven't installed are Dell Control Vault, Dell Control Point and that Broadcom USH thing. I haven't installled these because they wouldn't fix the problem I don't think?

Another thing that could be causing it is the battery, the battery is worn out like crazy. Windows keeps telling me to replace the battery but I don't have enough money to buy a new one yet. The battery lasts about 1 hour instead of how long the 9-cell battery should last.

If you have any solutions please let me know, thanks! :thumbsup:

Also I have ordered an extra 2GB Ram so once I have 4GB Ram i'll let you know if upgrading the Ram solved the problem.

 

when i ran my e6400 and 6410, I had the same issue with just 4gb ram. I would use close to 3.7+GB and it would freeze for say, good 5-10 seconds randomly, but all come back to work.

After I upgraded to 8gb for plenty of space, booya the problem is gone.

 

Thanks for your reply, but my Windows 7 freezes permenantly and it doesn't unfreeze, so I have to hold down the power button to power it off. :\

Hopefully the RAM upgrade solves it because I'm always doing stuff that needs more than 2gb ram